diff --git a/src/libseqarrange/include/libseqarrange/seq_interface.hpp b/src/libseqarrange/include/libseqarrange/seq_interface.hpp
index c9ed679a28..3e269bcc96 100644
--- a/src/libseqarrange/include/libseqarrange/seq_interface.hpp
+++ b/src/libseqarrange/include/libseqarrange/seq_interface.hpp
@@ -27,6 +27,8 @@ using namespace Slic3r;
 
 namespace Sequential
 {
+    class ObjectTooLargeException : public std::runtime_error { public: explicit ObjectTooLargeException(const std::string& msg) : std::runtime_error(msg) {}};
+    class InternalErrorException : public std::runtime_error { public: explicit InternalErrorException(const std::string& msg) : std::runtime_error(msg) {} };
 
 
     
diff --git a/src/libseqarrange/src/seq_preprocess.cpp b/src/libseqarrange/src/seq_preprocess.cpp
index df76ca69fc..59ccbfbef2 100644
--- a/src/libseqarrange/src/seq_preprocess.cpp
+++ b/src/libseqarrange/src/seq_preprocess.cpp
@@ -721,7 +721,7 @@ void prepare_ExtruderPolygons(const SolverConfiguration                  &solver
 		    printf("Object too large to fit onto plate.\n");
 		}
 		#endif
-		throw std::runtime_error("OBJECT TOO LARGE");
+		throw ObjectTooLargeException("OBJECT TOO LARGE");
 	    }
 	    
 	    if (printer_geometry.convex_heights.find(height) != printer_geometry.convex_heights.end())
@@ -742,7 +742,7 @@ void prepare_ExtruderPolygons(const SolverConfiguration                  &solver
 	    }
 	    else
 	    {
-		throw std::runtime_error("MISMATCH BETWEEN OBJECT AND PRINTER SLICE HEIGHTS.");
+		throw InternalErrorException("MISMATCH BETWEEN OBJECT AND PRINTER SLICE HEIGHTS.");
 	    }
 	}
     }
diff --git a/src/slic3r/GUI/Jobs/SeqArrangeJob.cpp b/src/slic3r/GUI/Jobs/SeqArrangeJob.cpp
index fb64c55130..a9d15f0b5d 100644
--- a/src/slic3r/GUI/Jobs/SeqArrangeJob.cpp
+++ b/src/slic3r/GUI/Jobs/SeqArrangeJob.cpp
@@ -8,7 +8,7 @@
 #include "slic3r/GUI/I18N.hpp"
 #include "slic3r/GUI/Plater.hpp"
 #include "slic3r/GUI/MsgDialog.hpp"
-
+#include "slic3r/GUI/format.hpp"
 
 
 
@@ -49,8 +49,19 @@ void SeqArrangeJob::finalize(bool canceled, std::exception_ptr& eptr)
         try {
             std::rethrow_exception(eptr);
         } catch (const ExceptionCannotApplySeqArrange&) {
-            ErrorDialog dlg(wxGetApp().plater(), _L("The result of the single-bed arrange would scatter instances of a single object between several beds, "
-                "possibly affecting order of printing of the non-selected beds. Consider using global arrange across all beds."), false);
+            ErrorDialog dlg(wxGetApp().plater(), _L("The result of the single-bed arrange would scatter "
+                "instances of a single object between several beds, possibly affecting order of printing "
+                "of the non-selected beds. Consider using global arrange across all beds."), false);
+            dlg.ShowModal();
+            error = true;
+            eptr = nullptr; // The exception is handled.
+        } catch (const Sequential::ObjectTooLargeException&) {
+            ErrorDialog dlg(wxGetApp().plater(), _L("One of the objects is too large to fit the bed."), false);
+            dlg.ShowModal();
+            error = true;
+            eptr = nullptr; // The exception is handled.
+        } catch (const Sequential::InternalErrorException& ex) {
+            ErrorDialog dlg(wxGetApp().plater(), GUI::format_wxstr(_L("Internal error: %1%"), ex.what()), false);
             dlg.ShowModal();
             error = true;
             eptr = nullptr; // The exception is handled.