Well that is weird... I don't mean to be rude but that does kind of indicate there is a problem with your computer. I don't know where to even start to help but I've used that app on dozens of computers (I build gaming computers on the side) and I've never had that problem.
Or possibly its an issue with RP expecting drivers that are not actually on my system. Or with Windows 7 x64 and RP not liking each other. Odd