I have two versions of Eclipse currently installed on my desktop PC (Neon and 2023-06) which is running Windows 10 Enterprise. I hope the information provided below is helpful. I have tried to update WindowBuilder and check all plugins and settings I can think of.Ĭan anyone offer any suggestions on resolving this issue? If I try to Delete Contents of a row or Delete Row I get this error AssertionFailedException: assertion failed This could be caused by a WindowBuilder bug or by a misconfiguration issue, conflict, partialupdate, etc. WindowBuilder encountered unexpected internal error. I added a new label and tried to set the text and got this error. If I try to change a label text or rename a component I get errors.

Every time I use the Pallet to drop a component onto my JPanel. Since then, I have issues when using GridBagLayout. I upgraded from Eclipse Neon which was not having any problems to Eclipse 2023-06.