i have kaon 550xsc patched to all cam have been using mvr cam with 2.16 f/ware has been working fine till upgraded to mvr 2.18file via cas interface2 now blank screen on tps m/vision etc fta all ok my reciever keeps saying cam not installed have tried flashing back to 2.16 etc but still not working when i load cam into cas2 all the relevent info comes up on it but my reciever keeeps saying cam not installed even tried reseting reciever to factory defaults i know not much info on kaon what have i done wrong is my cam fooked or not or could it be cam slots on reciever etc nearly through kaon out of window please help