diff --git a/eeschema/sim/simulator_frame.cpp b/eeschema/sim/simulator_frame.cpp
index 81dbe763ff..270e29647c 100644
--- a/eeschema/sim/simulator_frame.cpp
+++ b/eeschema/sim/simulator_frame.cpp
@@ -551,6 +551,7 @@ bool SIMULATOR_FRAME::LoadWorkbook( const wxString& aPath )
         return true;
     }
 
+    DisplayErrorMessage( this, wxString::Format( _( "Unable to load or parse file %s" ), aPath ) );
     return false;
 }
 
diff --git a/eeschema/sim/simulator_frame_ui.cpp b/eeschema/sim/simulator_frame_ui.cpp
index e9d15e0812..7e58158690 100644
--- a/eeschema/sim/simulator_frame_ui.cpp
+++ b/eeschema/sim/simulator_frame_ui.cpp
@@ -2109,6 +2109,29 @@ bool SIMULATOR_FRAME_UI::loadJsonWorkbook( const wxString& aPath )
 
         return false;
     }
+    catch( nlohmann::json::type_error& error )
+    {
+        wxLogTrace( traceSettings, wxT( "Json type error reading %s: %s" ), aPath, error.what() );
+
+        return false;
+    }
+    catch( nlohmann::json::invalid_iterator& error )
+    {
+        wxLogTrace( traceSettings, wxT( "Json invalid_iterator error reading %s: %s" ), aPath, error.what() );
+
+        return false;
+    }
+    catch( nlohmann::json::out_of_range& error )
+    {
+        wxLogTrace( traceSettings, wxT( "Json out_of_range error reading %s: %s" ), aPath, error.what() );
+
+        return false;
+    }
+    catch( ... )
+    {
+        wxLogTrace( traceSettings, wxT( "Error reading %s" ), aPath );
+        return false;
+    }
 
     return true;
 }