Erm...I dont have a gamelists folder. Is that the cause? I do have a retropie\configs\all\emulationstation\gamelists\ folder though. If it is the one, every folder within there has a gamelist.xml file in. Is it the one in 'zxspectrum' im deleting? As that was the system I was using when it all went wrong?
Oops. Posted this on the wrong thread. Having an awesome day today! haha