I tried everything:
1. Resetting Vegas Pro
2. Reinstalling Vegas Pro
3. Deactivating Vegas and then Activating it again
4. Run as Administrator
None of the above worked.
I bought Vegas Pro today, and the activation with the serial number worked fine, but when I try to import any of my MP4s or even a Vegas Capture project, I get this error.
Note that I could download a video from the Hub and use it just fine...
Help!