ChImp PS3 error turn off system


I recently installed a chimp with a madcatz/gamestop pcb . As soon as it is plugged in to a ps3 the green light on the pcb flickers and the ps3 prompts me to turn off the system. I cannot use the stick at all after that. However when the xbox pcb is disconnected i experience no issues with the stick on the ps3. Any suggestions??