SOLVED - Oscdimg.exe is not a valid win32 application I hope someone can help..... I just purchased the Windows 7 ultimate student version with the intention of doing a clean install over my Windows 7 RC. I've been trying to make an iso using the instructions here in this forum, but no matter what I get the "oscdimg.exe is not a valid win32 application" error. I've switched drives and drive paths as suggested, and yes I made sure oscdimg.exe was/is in the win32 folder but still the same error.Could somebody please point me in the right direction? PS After downloading, I went to unblock everything using properties etc......but there was no unblock option listed. Maybe this has something to do with it but I doubt it. I DID uncheck read only in all the files however.