I’ve had success with Vegas Pro by in doing the following:
1] Copy the BAK file and rename it Test.veg – you can call it anything, even like PANIC.veg but for you it would be PANIC.vf.
Doing this would still leave your bak untouched.
Loading a file that was going through a background process makes me think that it was attempting a “save”, and Vegas was choking on something. Maybe an IT Guru could confirm or deny? Anyhooo…. You could have a need to do some house-keeping and assess what your space on your drives and your temp folder for MS is having to deal with. I recently allowed my 2TB production hd close down to 3mb! – Eh, not good . . . .
I really hope you can get this sorted out. You could also try and attempt to make a small VF project and test that just to see if there are any issues with that.
HTHs
Grazie
Video Content Creator and Potter
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