Sony Vegas is one of the most popularvideo editing softwareon the market.
It supports a plethora of advanced editing options that allow you to create amazing video content.
If this error started occurring after converting the video file, convert the original video again to MP4.
Maybe the tool you used to convert the file did not work as expected.
Or the file got corrupted for whatever reason and became unusable.
Many users fixed this problem with HandBrake.
If the files are on another drive, the program may not be able to open them.
Update the Program
Ensure youre running the latest Vegas updates on your machine.
Run Vegas as Administrator
Launch Sony Vegas with admin rights.
have a go at load the problematic file again and check the results.
