I am currently using 501b.015 of Icon Packager in Windows 7 RC-1 64 bit. I can not seem to start the program using impulse it says that it is not comaptialbe. However I can run the program if I go to its folder and double click the executable file for the program. In Impulse I have checked and I do have show pre-release versions checked in the settings. I think this where the problem lies because Impulse does not show any Betas including Web Blinds 7