Sony Vegas Fix
Hello and Welcome. If you still have problems with sony vegas even if you already tried these issues, then we suggest to follow our guide, even if is not too safe.
First Step (very important ...backup step)
Go to C: Program Files\Sony\Sony Vegas\ and select : ErrorReportClient and PRSConfig (press CTRL and select both files) then select 7zip - Add to archive
The backup is finished and is time to next step.
Now, select both files again (ErrorReportClient and PRSConfig) and delete both files.
Try to run Sony Vegas now and if working, then you DONE.
If NO, be sure that you have all prerequisites installed.
Last chance ! How to fix Sony Vegas manually
Good Luck !