The same problem occurs for me using T-Rex with Alphacrypt ("CHC-TREX-V9 CardSupport") firmware and Season Interface/Topfield TF4000 PVR and CAS Interface/Fausto v1.45. ECM received & sent to card. Control Word/s obtained from Card sent back to decoder = blank screen, all other channels (Sky Sports, Sky One, Sky Movies Premiere etc) seem fine, is there a way of using Oscam with Fausto? Pick TV not that great a channel anyway.....but suppose it starts happening to more channels, so would like to know if there is a solution.