Here is what my theme tech support said about wp minify locking up my slider on the site.
I looked at your site. I checked it through the Google Chrome Debugger tool and saw that the Slider issue has been caused by two plugins.
WP Minify did combine all the Java Scripts in a way, that the jquery library wasn't recognized anymore and the WP Pin Board Pro has the following
Java Script Error:
Uncaught TypeError: Cannot read property 'top' of undefined
After deactivating these two plugins, the slider worked and the site was even loading faster then before.