I use SuperCache Version 0.9.9.7 with the CDN enabled (MaxCDN).
I found a bad image link in my theme.css. I removed it and tested on my devopement site, which now gets a clean bill of health with no bad links (Pingdom test). However, when I implement the same change to the live site, the link error continues no matter what I do.
I came to find out that if I deactivate Supercache, my live site then is clean; reactivated and now the the file error reappears. I've cleared the cache using the inline clear cache button and even logged-in via fttp to manually delete cache content in the SuperCache folder to no avail.
Any suggestions? I appear to be caught in cache hell somewhere. Perhaps other hidden cache locations?