try turning the spinny wheel (not the rip), as sometimes mine can stick when the spring reaches the maximum extension. I have to stick my fingers in and turn the wheel towards the feedneck to get it back, unlikely but worth a try. Jams happen alot if you overfill / pack the paint down and also make sure you turn the Halo on before you put the paint in - or you'll get a jam. Check the eyes by sticking your finger quickly up the feedneck, it should stop spinning immediately, if it doesnt the eys probably need replacing.
Hope this helps.