ok nima,
i know that you have windows 7. sometimes if you have problems with software, you can use the compatibility modes to make the program 'think' it is running on a vista (or xp) machine. you do this by right-clicking and going to the compatibility tab and selecting 'vista sp1', for example.
or you can try right-clicking and use 'troubleshoot compatabilty' - sometimes it makes the program run ok.
sometimes running 'as administrator' works too.
if you have tried all of these, then i'm sorry, i do not what else will help.
good luck.