Kept getting this error, everytime I clicked render ( never even got to the option to choose what type of render ) "vegas pro 15 an error occurred while creating the media file an invalid argument"

This was after I had rendered several projects.

Rebooted.

Uninstalled/Reinstalled - same thing.

Had to reset settings to default using this "Press CTRL+SHIFT while double-clicking on the program’s icon to launch it.  Continue to hold the CTRL & SHIFT keys until the program is fully up and loaded."

And now it works again.

Thought I'd share in case someone else is having the same issue.