Ok you took the stuck nail out of the gun where it was stuck with the driver, yes. If so, Take air off,, take a long skinny screw driver and stick it in said hole and check to see if driver has returned the stroke backwards to a ready to fire position. If you feel the driver still forward push it backwards all the way. Remove all tools,, load a clip, hook the air hose and fire. if you get a nail (success) but if it fails after this shot and the same problems start all over again the chances are the driver is broken..