Can't find main class in NetBeans 6.9

Question

Whenever I load NetBeans 6.9 (similar errors happened on previous versions also) then I let NetBeans finish scanning my projects and once it\'s done I try to run a profile w

Answer 1

I fixed a very similar behaviour by deleting NetBeans's cache. Delete the folder User\.netbeans\6.9\var\cache\index\.

Windows 7 and Netbeans 7.2: User\AppData\Local\NetBeans\Cache\7.2\index