Skip to main content

GUI Builder Error, undoing...

Please note these forums are being decommissioned and use the new and improved forums at
1 reply [Last post]
Joined: 2011-01-08

Hi to all, I cannot delete a button: if I try, a message says: "GUI Builder Error, undoing...": the illusion is that the component seems to be deleted, but if I open another form and then go back to the one containg the button, it remains stille there; what can I do?
Thanks in advance

Reply viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
Joined: 2003-11-07

This happens when an illegal state occurs to prevent you from breaking the file.
First make sure you are using the latest version from (notice the URL changed). I suggest you run javaws -viewer and delete everything you see there since the updates sometimes don't arrive correctly!
Assuming you are using the latest version:
When this happens there is a stack trace in the console, please run the application with the java console open (you can enable it in the java control panel) and open an issue with the stack.