diff --git a/resources/localization/cs/PrusaSlicer.mo b/resources/localization/cs/PrusaSlicer.mo
index e80adb4755..a19fb22ef2 100644
Binary files a/resources/localization/cs/PrusaSlicer.mo and b/resources/localization/cs/PrusaSlicer.mo differ
diff --git a/resources/localization/cs/PrusaSlicer_cs.po b/resources/localization/cs/PrusaSlicer_cs.po
index f905737572..f8dea215bf 100644
--- a/resources/localization/cs/PrusaSlicer_cs.po
+++ b/resources/localization/cs/PrusaSlicer_cs.po
@@ -17011,7 +17011,7 @@ msgstr "Přenést vybraná nastavení do nově zvoleného přednastavení."
 
 #: src/slic3r/GUI/UnsavedChangesDialog.cpp:1626
 msgid "Transfer values from left to right"
-msgstr "Přenést hodnoty zprava doleva"
+msgstr "Přenést hodnoty zleva doprava"
 
 #: src/slic3r/GUI/GUI_ObjectManipulation.cpp:678
 msgid "Translate"
diff --git a/resources/profiles/PrusaResearch/MK2.5MMU2_thumbnail.png b/resources/profiles/PrusaResearch/MK2.5MMU2_thumbnail.png
index 4affdf8abc..6f6e2bcb1b 100644
Binary files a/resources/profiles/PrusaResearch/MK2.5MMU2_thumbnail.png and b/resources/profiles/PrusaResearch/MK2.5MMU2_thumbnail.png differ
diff --git a/resources/profiles/Templates.idx b/resources/profiles/Templates.idx
index 728a7da353..64a37db6ad 100644
--- a/resources/profiles/Templates.idx
+++ b/resources/profiles/Templates.idx
@@ -1,4 +1,5 @@
 min_slic3r_version = 2.6.0-alpha0
+1.0.3 Updated compatible printer condition.
 1.0.2 Updated compatible printer conditions.
 1.0.1 Added Prusament PETG Carbon Fiber, Fiberthree F3 PA-GF30 Pro. 
 1.0.0 Initial
diff --git a/resources/profiles/Templates.ini b/resources/profiles/Templates.ini
index d038d572db..541b429a8a 100644
--- a/resources/profiles/Templates.ini
+++ b/resources/profiles/Templates.ini
@@ -2,7 +2,7 @@
 
 [vendor]
 name = Templates
-config_version = 1.0.2
+config_version = 1.0.3
 config_update_url = https://files.prusa3d.com/wp-content/uploads/repository/PrusaSlicer-settings-master/live/Templates/
 templates_profile = 1
 
@@ -11,7 +11,7 @@ templates_profile = 1
 [filament:*common*]
 cooling = 1
 compatible_printers = 
-compatible_printers_condition = printer_notes!~/.*PRINTER_VENDOR_TRILAB.*/ and printer_notes!~/.*PRINTER_MODEL_MK4IS.*/
+compatible_printers_condition = printer_notes!~/.*PRINTER_VENDOR_TRILAB.*/ and printer_notes!~/.*PRINTER_MODEL_MK4IS.*/ and ! (printer_notes=~/.*PRINTER_VENDOR_PRUSA3D.*/ and num_extruders>1)
 end_filament_gcode = "; Filament-specific end gcode"
 extrusion_multiplier = 1
 filament_loading_speed = 14
diff --git a/src/libslic3r/Fill/Fill.cpp b/src/libslic3r/Fill/Fill.cpp
index ed735a38bd..499e7b85af 100644
--- a/src/libslic3r/Fill/Fill.cpp
+++ b/src/libslic3r/Fill/Fill.cpp
@@ -468,11 +468,8 @@ void Layer::make_fills(FillAdaptive::Octree* adaptive_fill_octree, FillAdaptive:
         f->print_config        = &this->object()->print()->config();
         f->print_object_config = &this->object()->config();
 
-		if (surface_fill.params.pattern == ipLightning) {
-			auto *lf = dynamic_cast<FillLightning::Filler*>(f.get());
-			lf->generator = lightning_generator;
-			lf->num_raft_layers = this->object()->slicing_parameters().raft_layers();
-		}
+        if (surface_fill.params.pattern == ipLightning)
+            dynamic_cast<FillLightning::Filler*>(f.get())->generator = lightning_generator;
 
         if (surface_fill.params.pattern == ipEnsuring) {
             auto *fill_ensuring = dynamic_cast<FillEnsuring *>(f.get());
@@ -649,18 +646,15 @@ Polylines Layer::generate_sparse_infill_polylines_for_anchoring(FillAdaptive::Oc
         // Create the filler object.
         std::unique_ptr<Fill> f = std::unique_ptr<Fill>(Fill::new_from_type(surface_fill.params.pattern));
         f->set_bounding_box(bbox);
-        f->layer_id = this->id();
+        f->layer_id = this->id() - this->object()->get_layer(0)->id(); // We need to subtract raft layers.
         f->z        = this->print_z;
         f->angle    = surface_fill.params.angle;
         f->adapt_fill_octree   = (surface_fill.params.pattern == ipSupportCubic) ? support_fill_octree : adaptive_fill_octree;
         f->print_config        = &this->object()->print()->config();
         f->print_object_config = &this->object()->config();
 
-        if (surface_fill.params.pattern == ipLightning) {
-            auto *lf            = dynamic_cast<FillLightning::Filler *>(f.get());
-            lf->generator       = lightning_generator;
-            lf->num_raft_layers = this->object()->slicing_parameters().raft_layers();
-        }
+        if (surface_fill.params.pattern == ipLightning)
+            dynamic_cast<FillLightning::Filler *>(f.get())->generator = lightning_generator;
 
         // calculate flow spacing for infill pattern generation
         double link_max_length = 0.;
diff --git a/src/libslic3r/Fill/FillLightning.cpp b/src/libslic3r/Fill/FillLightning.cpp
index 8c3ac8f1ac..36a48e5547 100644
--- a/src/libslic3r/Fill/FillLightning.cpp
+++ b/src/libslic3r/Fill/FillLightning.cpp
@@ -13,7 +13,7 @@ void Filler::_fill_surface_single(
     ExPolygon                      expolygon,
     Polylines                     &polylines_out)
 {
-    const Layer &layer      = generator->getTreesForLayer(this->layer_id - this->num_raft_layers);
+    const Layer &layer      = generator->getTreesForLayer(this->layer_id);
     Polylines    fill_lines = layer.convertToLines(to_polygons(expolygon), scaled<coord_t>(0.5 * this->spacing - this->overlap));
 
     if (params.dont_connect() || fill_lines.size() <= 1) {
diff --git a/src/libslic3r/Fill/FillLightning.hpp b/src/libslic3r/Fill/FillLightning.hpp
index 0705dc657f..341399508f 100644
--- a/src/libslic3r/Fill/FillLightning.hpp
+++ b/src/libslic3r/Fill/FillLightning.hpp
@@ -22,7 +22,6 @@ public:
     ~Filler() override = default;
 
     Generator   *generator { nullptr };
-    size_t       num_raft_layers { 0 };
 protected:
     Fill* clone() const override { return new Filler(*this); }
 
diff --git a/src/libslic3r/Format/SLAArchiveFormatRegistry.cpp b/src/libslic3r/Format/SLAArchiveFormatRegistry.cpp
index 17d3fa9a0b..0a72cbcf33 100644
--- a/src/libslic3r/Format/SLAArchiveFormatRegistry.cpp
+++ b/src/libslic3r/Format/SLAArchiveFormatRegistry.cpp
@@ -11,20 +11,17 @@
 
 namespace Slic3r {
 
-static std::mutex arch_mtx;
-
 class Registry {
     static std::unique_ptr<Registry> registry;
 
     std::set<ArchiveEntry> entries;
-public:
 
     Registry ()
     {
         entries = {
             {
                 "SL1",                      // id
-                L("SL1 archive format"),    // description
+                L("SL1 archive"),    // description
                 "sl1",                      // main extension
                 {"sl1s", "zip"},            // extension aliases
 
@@ -38,22 +35,14 @@ public:
             },
             {
                 "SL1SVG",
-                L("SL1SVG archive files"),
+                L("SL1 SVG archive"),
                 "sl1_svg",
-                {},
+                {"zip"},
                 [] (const auto &cfg) { return std::make_unique<SL1_SVGArchive>(cfg); },
                 [] (const std::string &fname, SLAImportQuality quality, const ProgrFn &progr) {
                     return std::make_unique<SL1_SVGReader>(fname, quality, progr);
                 }
             },
-            {
-                "SL2",
-                "",
-                "sl1_svg",
-                {},
-                [] (const auto &cfg) { return std::make_unique<SL1_SVGArchive>(cfg); },
-                nullptr
-            },
             anycubic_sla_format("pwmo", "Photon Mono"),
             anycubic_sla_format("pwmx", "Photon Mono X"),
             anycubic_sla_format("pwms", "Photon Mono SE"),
@@ -85,28 +74,26 @@ public:
         };
     }
 
-    static Registry& get_instance()
+public:
+
+    static const Registry& get_instance()
     {
         if (!registry)
-            registry = std::make_unique<Registry>();
+            registry.reset(new Registry());
 
         return *registry;
     }
 
-    static std::set<ArchiveEntry>& get()
+    static const std::set<ArchiveEntry>& get()
     {
         return get_instance().entries;
     }
-
-    std::set<ArchiveEntry>& get_entries() { return entries; }
 };
 
 std::unique_ptr<Registry> Registry::registry = nullptr;
 
-std::set<ArchiveEntry> registered_sla_archives()
+const std::set<ArchiveEntry>& registered_sla_archives()
 {
-    std::lock_guard lk{arch_mtx};
-
     return Registry::get();
 }
 
@@ -123,8 +110,6 @@ std::vector<std::string> get_extensions(const ArchiveEntry &entry)
 
 ArchiveWriterFactory get_writer_factory(const char *formatid)
 {
-    std::lock_guard lk{arch_mtx};
-
     ArchiveWriterFactory ret;
     auto entry = Registry::get().find(ArchiveEntry{formatid});
     if (entry != Registry::get().end())
@@ -135,7 +120,6 @@ ArchiveWriterFactory get_writer_factory(const char *formatid)
 
 ArchiveReaderFactory get_reader_factory(const char *formatid)
 {
-    std::lock_guard lk{arch_mtx};
 
     ArchiveReaderFactory ret;
     auto entry = Registry::get().find(ArchiveEntry{formatid});
@@ -145,4 +129,28 @@ ArchiveReaderFactory get_reader_factory(const char *formatid)
     return ret;
 }
 
+const char *get_default_extension(const char *formatid)
+{
+    static constexpr const char *Empty = "";
+
+    const char * ret = Empty;
+
+    auto entry = Registry::get().find(ArchiveEntry{formatid});
+    if (entry != Registry::get().end())
+        ret = entry->ext;
+
+    return ret;
+}
+
+const ArchiveEntry * get_archive_entry(const char *formatid)
+{
+    const ArchiveEntry *ret = nullptr;
+
+    auto entry = Registry::get().find(ArchiveEntry{formatid});
+    if (entry != Registry::get().end())
+        ret = &(*entry);
+
+    return ret;
+}
+
 } // namespace Slic3r::sla
diff --git a/src/libslic3r/Format/SLAArchiveFormatRegistry.hpp b/src/libslic3r/Format/SLAArchiveFormatRegistry.hpp
index fb1a18ca52..896888bd59 100644
--- a/src/libslic3r/Format/SLAArchiveFormatRegistry.hpp
+++ b/src/libslic3r/Format/SLAArchiveFormatRegistry.hpp
@@ -48,9 +48,9 @@ struct ArchiveEntry {
         : id{formatid}
         , desc{description}
         , ext{extension}
-        , ext_aliases{extaliases}
         , wrfactoryfn{wrfn}
         , rdfactoryfn{rdfn}
+        , ext_aliases{extaliases}
     {}
 
     bool operator <(const ArchiveEntry &other) const
@@ -61,8 +61,10 @@ struct ArchiveEntry {
 
 std::vector<std::string> get_extensions(const ArchiveEntry &entry);
 
-std::set<ArchiveEntry> registered_sla_archives();
+const std::set<ArchiveEntry>& registered_sla_archives();
 
+const ArchiveEntry * get_archive_entry(const char *formatid);
+const char * get_default_extension(const char *formatid);
 ArchiveWriterFactory get_writer_factory(const char *formatid);
 ArchiveReaderFactory get_reader_factory(const char *formatid);
 
diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 54177d2135..d65e0aa9ff 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1296,8 +1296,12 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
         this->placeholder_parser().set("first_layer_print_min",  new ConfigOptionFloats({ bbox.min.x(), bbox.min.y() }));
         this->placeholder_parser().set("first_layer_print_max",  new ConfigOptionFloats({ bbox.max.x(), bbox.max.y() }));
         this->placeholder_parser().set("first_layer_print_size", new ConfigOptionFloats({ bbox.size().x(), bbox.size().y() }));
-
-        std::vector<unsigned char> is_extruder_used(print.config().nozzle_diameter.size(), 0);
+        this->placeholder_parser().set("num_extruders", int(print.config().nozzle_diameter.values.size()));
+        // PlaceholderParser currently substitues non-existent vector values with the zero'th value, which is harmful in the case of "is_extruder_used[]"
+        // as Slicer may lie about availability of such non-existent extruder.
+        // We rather sacrifice 256B of memory before we change the behavior of the PlaceholderParser, which should really only fill in the non-existent
+        // vector elements for filament parameters.
+        std::vector<unsigned char> is_extruder_used(std::max(size_t(255), print.config().nozzle_diameter.size()), 0);
         for (unsigned int extruder_id : tool_ordering.all_extruders())
             is_extruder_used[extruder_id] = true;
         this->placeholder_parser().set("is_extruder_used", new ConfigOptionBools(is_extruder_used));
diff --git a/src/libslic3r/GCodeReader.cpp b/src/libslic3r/GCodeReader.cpp
index a45ea8439e..cb0366757a 100644
--- a/src/libslic3r/GCodeReader.cpp
+++ b/src/libslic3r/GCodeReader.cpp
@@ -243,9 +243,10 @@ bool GCodeReader::GCodeLine::has_value(char axis, float &value) const
     if (c == nullptr)
         return false;
     // Try to parse the numeric value.
-    char   *pend = nullptr;
-    double  v = strtod(++ c, &pend);
-    if (pend != nullptr && is_end_of_word(*pend)) {
+    double v = 0.;
+    const char* end = m_raw.c_str() + m_raw.size();
+    auto [pend, ec] = fast_float::from_chars(++c, end, v);
+    if (pend != c && is_end_of_word(*pend)) {
         // The axis value has been parsed correctly.
         value = float(v);
         return true;
diff --git a/src/libslic3r/PlaceholderParser.cpp b/src/libslic3r/PlaceholderParser.cpp
index 786f4093ca..40126421c4 100644
--- a/src/libslic3r/PlaceholderParser.cpp
+++ b/src/libslic3r/PlaceholderParser.cpp
@@ -1090,6 +1090,7 @@ namespace client
 
         static void scalar_variable_assign_scalar(const MyContext *ctx, OptWithPos &lhs, const expr &rhs)
         {
+            assert(! ctx->skipping());
             assert(lhs.opt->is_scalar());
             check_writable(ctx, lhs);
             ConfigOption *wropt = const_cast<ConfigOption*>(lhs.opt);
@@ -1121,6 +1122,7 @@ namespace client
 
         static void vector_variable_element_assign_scalar(const MyContext *ctx, OptWithPos &lhs, const expr &rhs)
         {
+            assert(! ctx->skipping());
             assert(lhs.opt->is_vector());
             check_writable(ctx, lhs);
             if (! lhs.has_index())
@@ -1158,6 +1160,7 @@ namespace client
 
         static void vector_variable_assign_expr_with_count(const MyContext *ctx, OptWithPos &lhs, const expr &rhs_count, const expr &rhs_value)
         {
+            assert(! ctx->skipping());
             size_t count = evaluate_count(rhs_count);
             auto *opt = const_cast<ConfigOption*>(lhs.opt);
             switch (lhs.opt->type()) {
diff --git a/src/libslic3r/Print.cpp b/src/libslic3r/Print.cpp
index c62e274000..8d53dbb5a8 100644
--- a/src/libslic3r/Print.cpp
+++ b/src/libslic3r/Print.cpp
@@ -1541,6 +1541,7 @@ std::string Print::output_filename(const std::string &filename_base) const
     // These values will be just propagated into the output file name.
     DynamicConfig config = this->finished() ? this->print_statistics().config() : this->print_statistics().placeholders();
     config.set_key_value("num_extruders", new ConfigOptionInt((int)m_config.nozzle_diameter.size()));
+    config.set_key_value("default_output_extension", new ConfigOptionString(".gcode"));
     return this->PrintBase::output_filename(m_config.output_filename_format.value, ".gcode", filename_base, &config);
 }
 
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index ca8aa76d35..3da804066b 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -1983,7 +1983,7 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("You can use all configuration options as variables inside this template. "
                    "For example: [layer_height], [fill_density] etc. You can also use [timestamp], "
                    "[year], [month], [day], [hour], [minute], [second], [version], [input_filename], "
-                   "[input_filename_base].");
+                   "[input_filename_base], [default_output_extension].");
     def->full_width = true;
     def->mode = comExpert;
     def->set_default_value(new ConfigOptionString("[input_filename_base].gcode"));
@@ -4982,21 +4982,21 @@ std::string get_sla_suptree_prefix(const DynamicPrintConfig &config)
     return slatree;
 }
 
-static bool is_XL_printer(const std::string& printer_model)
+static bool is_XL_printer(const std::string& printer_notes)
 {
-    static constexpr const char *ALIGN_ONLY_FOR = "XL";
-    return boost::algorithm::contains(printer_model, ALIGN_ONLY_FOR);
+    return boost::algorithm::contains(printer_notes, "PRINTER_VENDOR_PRUSA3D")
+        && boost::algorithm::contains(printer_notes, "PRINTER_MODEL_XL");
 }
 
 bool is_XL_printer(const DynamicPrintConfig &cfg)
 {
-    auto *printer_model = cfg.opt<ConfigOptionString>("printer_model");
-    return printer_model && is_XL_printer(printer_model->value);    
+    auto *printer_notes = cfg.opt<ConfigOptionString>("printer_notes");
+    return printer_notes && is_XL_printer(printer_notes->value);
 }
 
 bool is_XL_printer(const PrintConfig &cfg)
 {
-    return is_XL_printer(cfg.printer_model.value);
+    return is_XL_printer(cfg.printer_notes.value);
 }
 
 } // namespace Slic3r
diff --git a/src/libslic3r/SLAPrint.cpp b/src/libslic3r/SLAPrint.cpp
index 1598cd46b2..9df2862a19 100644
--- a/src/libslic3r/SLAPrint.cpp
+++ b/src/libslic3r/SLAPrint.cpp
@@ -4,6 +4,8 @@
 #include "CSGMesh/PerformCSGMeshBooleans.hpp"
 #include "format.hpp"
 
+#include "Format/SLAArchiveFormatRegistry.hpp"
+
 #include "Geometry.hpp"
 #include "Thread.hpp"
 
@@ -522,6 +524,7 @@ SLAPrint::ApplyStatus SLAPrint::apply(const Model &model, DynamicPrintConfig con
 #endif /* _DEBUG */
 
     m_full_print_config = std::move(config);
+
     return static_cast<ApplyStatus>(apply_status);
 }
 
@@ -531,7 +534,16 @@ SLAPrint::ApplyStatus SLAPrint::apply(const Model &model, DynamicPrintConfig con
 std::string SLAPrint::output_filename(const std::string &filename_base) const
 {
     DynamicConfig config = this->finished() ? this->print_statistics().config() : this->print_statistics().placeholders();
-    return this->PrintBase::output_filename(m_print_config.output_filename_format.value, ".sl1", filename_base, &config);
+    std::string default_ext = get_default_extension(m_printer_config.sla_archive_format.value.c_str());
+    if (default_ext.empty())
+        default_ext = "sl1";
+
+    default_ext.insert(default_ext.begin(), '.');
+
+    config.set_key_value("default_output_extension",
+                         new ConfigOptionString(default_ext));
+
+    return this->PrintBase::output_filename(m_print_config.output_filename_format.value, default_ext, filename_base, &config);
 }
 
 std::string SLAPrint::validate(std::vector<std::string>*) const
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 8773b15a4a..275a5f8643 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -7525,6 +7525,7 @@ void GLCanvas3D::_set_warning_notification(EWarning warning, bool state)
                     wxGetApp().CallAfter([obj_idx, layer_id]() {
                         wxGetApp().plater()->set_preview_layers_slider_values_range(0, layer_id - 1);
                         wxGetApp().plater()->select_view_3D("3D");
+                        wxGetApp().plater()->canvas3D()->reset_all_gizmos();
                         wxGetApp().plater()->canvas3D()->get_selection().add_object(obj_idx, true);
                         wxGetApp().obj_list()->update_selections();
                     });
diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index ec7f43ae11..1bd477e73d 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -54,6 +54,7 @@
 #include "libslic3r/Model.hpp"
 #include "libslic3r/PresetBundle.hpp"
 #include "libslic3r/Color.hpp"
+#include "libslic3r/Format/SLAArchiveFormatRegistry.hpp"
 
 #include "GUI.hpp"
 #include "GUI_Utils.hpp"
@@ -490,15 +491,13 @@ static const FileWildcards file_wildcards_by_type[FT_SIZE] = {
 
     /* FT_TEX */     { "Texture"sv,         { ".png"sv, ".svg"sv } },
 
-    /* FT_SL1 */     { "Masked SLA files"sv, { ".sl1"sv, ".sl1s"sv, ".pwmx"sv } },
+    /* FT_SL1 (deprecated, overriden by sla_wildcards) */     { "Masked SLA files"sv, { ".sl1"sv, ".sl1s"sv, ".pwmx"sv } },
 
     /* FT_ZIP */     { "Zip files"sv, { ".zip"sv } },
 };
 
-#if ENABLE_ALTERNATIVE_FILE_WILDCARDS_GENERATOR
-wxString file_wildcards(FileType file_type)
+static wxString file_wildcards(const FileWildcards& data)
 {
-    const FileWildcards& data = file_wildcards_by_type[file_type];
     std::string title;
     std::string mask;
 
@@ -532,6 +531,14 @@ wxString file_wildcards(FileType file_type)
 
     return ret;
 }
+
+#if ENABLE_ALTERNATIVE_FILE_WILDCARDS_GENERATOR
+wxString file_wildcards(FileType file_type)
+{
+    const FileWildcards& data = file_wildcards_by_type[file_type];
+
+    return file_wildcards(data);
+}
 #else
 // This function produces a Win32 file dialog file template mask to be consumed by wxWidgets on all platforms.
 // The function accepts a custom extension parameter. If the parameter is provided, the custom extension
@@ -590,6 +597,34 @@ wxString file_wildcards(FileType file_type, const std::string &custom_extension)
 }
 #endif // ENABLE_ALTERNATIVE_FILE_WILDCARDS_GENERATOR
 
+wxString sla_wildcards(const char *formatid)
+{
+    const ArchiveEntry *entry = get_archive_entry(formatid);
+    wxString ret;
+
+    if (entry) {
+        FileWildcards wc;
+        std::string tr_title = I18N::translate_utf8(entry->desc);
+        tr_title = GUI::format(_u8L("%s files"), tr_title);
+        wc.title = tr_title;
+
+        std::vector<std::string> exts = get_extensions(*entry);
+
+        wc.file_extensions.reserve(exts.size());
+        for (std::string &ext : exts) {
+            ext.insert(ext.begin(), '.');
+            wc.file_extensions.emplace_back(ext);
+        }
+
+        ret = file_wildcards(wc);
+    }
+
+    if (ret.empty())
+        ret = file_wildcards(FT_SL1);
+
+    return ret;
+}
+
 static std::string libslic3r_translate_callback(const char *s) { return wxGetTranslation(wxString(s, wxConvUTF8)).utf8_str().data(); }
 
 #ifdef WIN32
@@ -924,9 +959,9 @@ void GUI_App::init_app_config()
 {
 	// Profiles for the alpha are stored into the PrusaSlicer-alpha directory to not mix with the current release.
 
-//  SetAppName(SLIC3R_APP_KEY);
+    SetAppName(SLIC3R_APP_KEY);
 //	SetAppName(SLIC3R_APP_KEY "-alpha");
-    SetAppName(SLIC3R_APP_KEY "-beta");
+//  SetAppName(SLIC3R_APP_KEY "-beta");
 
 
 //	SetAppDisplayName(SLIC3R_APP_NAME);
diff --git a/src/slic3r/GUI/GUI_App.hpp b/src/slic3r/GUI/GUI_App.hpp
index 51900a9b61..6773806df2 100644
--- a/src/slic3r/GUI/GUI_App.hpp
+++ b/src/slic3r/GUI/GUI_App.hpp
@@ -84,6 +84,8 @@ extern wxString file_wildcards(FileType file_type);
 extern wxString file_wildcards(FileType file_type, const std::string &custom_extension = std::string{});
 #endif // ENABLE_ALTERNATIVE_FILE_WILDCARDS_GENERATOR
 
+wxString sla_wildcards(const char *formatid);
+
 enum ConfigMenuIDs {
     ConfigMenuWizard,
     ConfigMenuSnapshots,
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index da6b25a285..ac0189724f 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -4369,7 +4369,8 @@ void ObjectList::update_and_show_object_settings_item()
     const wxDataViewItem item = GetSelection();
     if (!item) return;
 
-    const wxDataViewItem& obj_item = m_objects_model->IsSettingsItem(item) ? m_objects_model->GetParent(item) : item;
+    // To get object item use GetTopParent(item). This function guarantees return of item with itObject type
+    const wxDataViewItem obj_item = m_objects_model->GetTopParent(item);
     select_item([this, obj_item](){ return add_settings_item(obj_item, &get_item_config(obj_item).get()); });
 }
 
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index aad118e0da..310e6b3f1b 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -2043,7 +2043,7 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
         "bed_shape", "bed_custom_texture", "bed_custom_model", "complete_objects", "duplicate_distance", "extruder_clearance_radius", "skirts", "skirt_distance",
         "brim_width", "brim_separation", "brim_type", "variable_layer_height", "nozzle_diameter", "single_extruder_multi_material",
         "wipe_tower", "wipe_tower_x", "wipe_tower_y", "wipe_tower_width", "wipe_tower_rotation_angle", "wipe_tower_brim_width", "wipe_tower_cone_angle", "wipe_tower_extra_spacing", "wipe_tower_extruder",
-        "extruder_colour", "filament_colour", "material_colour", "max_print_height", "printer_model", "printer_technology",
+        "extruder_colour", "filament_colour", "material_colour", "max_print_height", "printer_model", "printer_notes", "printer_technology",
         // These values are necessary to construct SlicingParameters by the Canvas3D variable layer height editor.
         "layer_height", "first_layer_height", "min_layer_height", "max_layer_height",
         "brim_width", "perimeters", "perimeter_extruder", "fill_density", "infill_extruder", "top_solid_layers", 
@@ -6409,9 +6409,11 @@ void Plater::export_gcode(bool prefer_removable)
             start_dir,
             from_path(default_output_file.filename()),
 #if ENABLE_ALTERNATIVE_FILE_WILDCARDS_GENERATOR
-            GUI::file_wildcards((printer_technology() == ptFFF) ? FT_GCODE : FT_SL1),
+            printer_technology() == ptFFF ?  GUI::file_wildcards(FT_GCODE) :
+                                             GUI::sla_wildcards(p->sla_print.printer_config().sla_archive_format.value.c_str()),
 #else
-            GUI::file_wildcards((printer_technology() == ptFFF) ? FT_GCODE : FT_SL1, ext),
+            printer_technology() == ptFFF ? GUI::file_wildcards(FT_GCODE, ext) :
+                                            GUI::sla_wildcards(p->sla_print.printer_config().sla_archive_format.value.c_str()),
 #endif // ENABLE_ALTERNATIVE_FILE_WILDCARDS_GENERATOR
             wxFD_SAVE | wxFD_OVERWRITE_PROMPT
         );
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 184b8af707..70632b543c 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -2267,6 +2267,14 @@ void TabFilament::msw_rescale()
     Tab::msw_rescale();
 }
 
+void TabFilament::sys_color_changed()
+{
+    m_extruders_cb->Clear();
+    update_extruder_combobox();
+
+    Tab::sys_color_changed();
+}
+
 void TabFilament::load_current_preset()
 {
     assert(m_active_extruder >= 0 && m_active_extruder < m_preset_bundle->extruders_filaments.size());
diff --git a/src/slic3r/GUI/Tab.hpp b/src/slic3r/GUI/Tab.hpp
index 81344c6151..f0be456a5a 100644
--- a/src/slic3r/GUI/Tab.hpp
+++ b/src/slic3r/GUI/Tab.hpp
@@ -462,6 +462,7 @@ public:
 	void		update() override;
 	void		clear_pages() override;
 	void        msw_rescale() override;
+	void		sys_color_changed() override;
 	bool 		supports_printer_technology(const PrinterTechnology tech) const override { return tech == ptFFF; }
     void        load_current_preset() override;
 
diff --git a/version.inc b/version.inc
index b8916bd685..2c397b5fa8 100644
--- a/version.inc
+++ b/version.inc
@@ -3,7 +3,7 @@
 
 set(SLIC3R_APP_NAME "PrusaSlicer")
 set(SLIC3R_APP_KEY "PrusaSlicer")
-set(SLIC3R_VERSION "2.6.0-beta4")
+set(SLIC3R_VERSION "2.6.0-rc1")
 set(SLIC3R_BUILD_ID "PrusaSlicer-${SLIC3R_VERSION}+UNKNOWN")
 set(SLIC3R_RC_VERSION "2,6,0,0")
 set(SLIC3R_RC_VERSION_DOTS "2.6.0.0")