diff --git a/src/slic3r/GUI/PhysicalPrinterDialog.cpp b/src/slic3r/GUI/PhysicalPrinterDialog.cpp
index a98ef4593..57a8f7700 100644
--- a/src/slic3r/GUI/PhysicalPrinterDialog.cpp
+++ b/src/slic3r/GUI/PhysicalPrinterDialog.cpp
@@ -271,31 +271,35 @@ void PhysicalPrinterDialog::update_printers()
 
     wxArrayString printers;
     Field* rs = m_optgroup->get_field("printhost_port");
-    if (!host->get_printers(printers)) {
-        std::vector<std::string> slugs;
+    try {
+        if (!host->get_printers(printers)) {
+            std::vector<std::string> slugs;
 
-        Choice* choice = dynamic_cast<Choice*>(rs);
-        choice->set_values(slugs);
+            Choice* choice = dynamic_cast<Choice*>(rs);
+            choice->set_values(slugs);
 
-        rs->disable();
-    } else {
-        std::vector<std::string> slugs;
-        for (int i = 0; i < printers.size(); i++) {
-            slugs.push_back(printers[i].ToStdString());
+            rs->disable();
+        } else {
+            std::vector<std::string> slugs;
+            for (int i = 0; i < printers.size(); i++) {
+                slugs.push_back(printers[i].ToStdString());
+            }
+
+            Choice* choice = dynamic_cast<Choice*>(rs);
+            choice->set_values(slugs);
+            boost::any val = choice->get_value();
+            boost::any any_string_type = std::string("");
+            auto value_idx = std::find(slugs.begin(), slugs.end(), m_config->opt<ConfigOptionString>("printhost_port")->value);
+            if ((val.empty() || (any_string_type.type() == val.type() && boost::any_cast<std::string>(val) == "")) && !slugs.empty() && value_idx == slugs.end()) {
+                change_opt_value(*m_config, "printhost_port", slugs[0]);
+                choice->set_value(slugs[0], false);
+            } else if (value_idx != slugs.end()) {
+                choice->set_value(m_config->option<ConfigOptionString>("printhost_port")->value, false);
+            }
+            rs->enable();
         }
-
-        Choice* choice = dynamic_cast<Choice*>(rs);
-        choice->set_values(slugs);
-        boost::any val = choice->get_value();
-        boost::any any_string_type = std::string("");
-        auto value_idx = std::find(slugs.begin(), slugs.end(), m_config->opt<ConfigOptionString>("printhost_port")->value);
-        if ((val.empty() || (any_string_type.type() == val.type() && boost::any_cast<std::string>(val) == "")) && !slugs.empty() && value_idx == slugs.end()) {
-            change_opt_value(*m_config, "printhost_port", slugs[0]);
-            choice->set_value(slugs[0],false);
-        } else if(value_idx != slugs.end() ){
-            choice->set_value(m_config->option<ConfigOptionString>("printhost_port")->value, false);
-        }
-        rs->enable();
+    } catch (HostNetworkError error) {
+        show_error(this, error.what());
     }
 }
 
diff --git a/src/slic3r/Utils/Repetier.cpp b/src/slic3r/Utils/Repetier.cpp
index c3c24c38e..7bae531ea 100644
--- a/src/slic3r/Utils/Repetier.cpp
+++ b/src/slic3r/Utils/Repetier.cpp
@@ -62,11 +62,14 @@ bool Repetier::test(wxString &msg) const
                 std::stringstream ss(body);
                 pt::ptree ptree;
                 pt::read_json(ss, ptree);
-                
-                const auto text = ptree.get_optional<std::string>("name");
-                res = validate_version_text(text);
-                if (! res) {
-                    msg = GUI::from_u8((boost::format(_u8L("Mismatched type of print host: %s")) % (text ? *text : "Repetier")).str());
+
+                res = ptree.get_optional<std::string>("name").has_value();
+                if (!res)
+                    msg = GUI::from_u8((boost::format(_u8L("Can't process the repetier return message: missing field '%s'")) % ("name")).str());
+                else {
+                    res = ptree.get_optional<std::string>("printers").has_value();
+                    if (!res)
+                        msg = GUI::from_u8((boost::format(_u8L("Can't process the repetier return message: missing field '%s'")) % ("printers")).str());
                 }
             }
             catch (const std::exception &) {