I'm using Eclipse 2021-9 version and already have windowbuilder installed. this error happens when I click the designer tab. Can anybody help me?
CodePudding user response:
I had the same issue and I just updated WindowBuilder Nightly Build 1.9.6.pre instalation and the problem was solved.
CodePudding user response:
When I build and run the project a blank window frame is displayed. On closing the application and then trying to switch to design view fails with error.