OK guys I think I have a new one,     I have debugged my collection - 100%mastery, duplicates, persistent ID, max 5 (mostly NO DD & sometimes bonus and rarely metronome)   I have been meticulous with this because I don't want to do it again or at least not anytime soon (fingers crossed). I have removed all duplicates and all backups from those folders in the CFSM (program files x86 section) I have scanned the CFSM program with an empty dlc folder to delete the ghost files (don't know the tec