Can't install trial on Windows 7 Professional

I've downloaded the trial version but I'm unable to install it. When I run setup.exe I get the error:

The Application was unable to start correctly (0xc0150004). Click OK to close the application.

I ran it as administrator. I even logged on with a local admin account to be sure I was getting the credentials correct. I've downloaded it 3 different times to make sure that It wasn't a problem with the zip file. Each time it extracted the full number of files.

Thanks