Installed SmartOptimizer as directed on a working Joomla site. All CSS and JS links broke. Spent 1 hour looking for solutions and trying to fix it, with no success. I only found a couple similar issues online and both were unanswered. Frustrated.
I have forked to create updates to this script and fix these types of issues.
Find the fork at http://www.github.com/Narimm/SmartOptimizer.
Please be more specific as to the paths etc that you were using. and what the requests were being returned as. Link me to your site if you wish