You could always try a fresh copy of MPC-HC Portable.
1. "Install" (it's really just a fancy-looking extractor) MPC-HC portable:
http://portableapps.com/apps/music_vide … c-portable
2. Run MPC-HC portable and then follow the instructions here to set it up for SVP:
http://svp-team.com/wiki/SVP:MPC-HC
3. Close MPC-HC portable and then launch it again.
4. Finally in MPC-HC portable, open the video you're trying to play through SVP and see if it works.
NOTE: "livestreamer"will not work correctly with MPC-HC Portable. If you are not a user of "livestreamer" or do not even know what "livestreamer" is, then ignore this warning.