Hi John the issue is that the site has a button for Famous Riffs on the song page and none of the riffs are available.
When I go to the list of riffs and click on the "Begin" button next to any riff I get the error message.
Are you saying the site just deleted all the riffs? That makes no sence.
Please look into this and see my screen shot.
The site is suppose to have riffs to learn and play