my sensor works when i test it and my canon owl slide on will flash repeaditly when i press the shutter, but when i hook up my stereo plugs there is no flash camera does not work, i can get it to flash every time i touch the wires toghether coming out of the camera. i have reversed the plug wires, still nothing. do i need to have film in the camera?? help!! i know on the older models they freeze up and need the on switch reset, but this one will flash everytime i press the shutter.