Wrong error message 'Duplicates not allowed'

[Anonymous]

Hello
whenever I move one package into another in the Model Explorer or move a Classifier from one package to another, I get error message 'Duplicates not allowed'. It's a minor issue because everything seems to work fine and the move is successful, but I need to click on 'OK' every time...

[Janusz Szpilewski]

Normally it does not show in basic scenarios, maybe you could test it with a fresh project. It looks like some corruption of the project file.

[Anonymous]

Thaks, yest this is an old project file created with StarUML but maintained with WhiteStarUML

[Janusz Szpilewski]

I think I could update the code to catch such exceptions and display a more meaningful error info (mentioning name of the colliding element).