My vegas version is 7.0 (old i know but i've been using it too long to change), and all of a sudden when i try to render any projects my vegas throws this error up. I have rendered using this codec before and this has happened with no change to anything.

The codec is called x264vfw. I have tried uninstalling and reinstalling the codec multiple times, and it is still brining the error up. Any ideas?

Thanks in advance for any replies.