Hi, Im a newbie and ive just bought a vectra 1.9cdti 2004 with a ccr2006. ive put proper retail discs in x4 put the magazine in and the player,it trys to load as i can hear it clicking but keeps saying chk disk4 and wont play any discs.I have even tried it with just 1 cd in magazine still same error.Anyone else had this, headunit or magazine fault any help pls