I'm having the same issue trying to use Quickbooks Pro 2013 on a Win 7 64 VM. The program opens correctly but the company files will not open. I've tried opening the files from both the shared folder, which Quickbooks sees as a network drive, and also copying them over to the My Documents folder under the user folder in Windows. Neither file location works, Quickbooks just gives me an error after about 10 minutes.
Has anyone been successful running Quickbooks in a Windows VM?