>>>>Sounds right.
>>>>
>>>>Maybe you could try uninstalling NET Framework 4.0 and install again?
>>>>
>>>>Just a shot in the dark...
>>>
>>>If I remove it, how do I re-install it?
>>
>>http://msdn.microsoft.com/en-us/netframework/aa569263
>
>Thanks. For now I repaired installation and checking if it helps. I'm a bit afraid to uninstall .NET 4.0 - what if someone breaks?

I've had to uninstall NET Framework versions in the past, and have not had problems (suprisingly).

YMMY.