The reason i suspect SP2 is because it worked fine under sp1. I could install, and run the program without any errors. Now under SP2, I cannot install as setup causes an access violation. I have cleaned all the temp folders out, and every other possibility that I can come up with. As soon as setup starts to run, it throws the access violation in setup.exe. Is there possibly a registry key that is causing the violation? Or am I correct that SP2 has created this issue?