Beginning in early 2012, with TurboTax 2011 tax year version, I can't use the software version at all unless I do it in a Windows XP virtual environment on my Windows 7 PC. This is all due to TurboTax's f-----g .NET Framework 4.0 issue. My .NET Framework files are all up to date, but every damn time I tried to install last year's TurboTax, and now trying to install THIS year's TurboTax, I get the same error message regarding .NET Framework 4.0, and NOTHING the Intuit people have suggested works. Hell, even their troubleshooting tips for Windows 7 PCs isn't correct. Their instructions don't match the configuration of Windows 7 systems. Idiots.