Hi, I'm getting the oh-so-helpful "ShellExecuteEx failed; code 2. The system cannot find the file specified." error when trying to launch the 9.0 installer. I've installed 8.x versions fine on this machine before. I tried reinstalling the 2010 vcredist, didn't help. I've also downloaded the zip several times to make sure it wasn't a freak download error. Running Windows 8.1 x64.