Ironically, my last release of MVVM Light V3 was about fixing bugs in templates and making them better. In the process however, seems that I introduced a regression bug in the WPF4 project templates. Yep shit happens.
How do I know if I have the bug? Check the Programs and Features control panel, and look for MVVM Light. If the "Version" column shows 3.0.2.19, you have the bug. If it shows anything higher, you don't. For instance, the new version with the bug correction is 3.0.3.19. Also, any version 4.*.*.* does not have this bug.
Alternatively, simply try to create a new WPF4 MVVM Light application in Studio. If you see the following warning, you have the bug.
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