Resetting RB is worth trying.

Just rename the above mentioned files (better than deleting). Relaunch RB. It rebuilds those files again.
Pay attention to any options along the way during install.

If it doesn't work you can delete the newly created files and rename the original files back to what they were.
Then you would be back to where you are now.


Make your sound your own!
.. I do not work here, but the benefits are still awesome