Hi all, approximately a month ago I installed oXygen 7.2 and acquired a trial license. When the trial period neared its end a counter indicating the days left began to show up at start up. I purchased a professional license and pasted the key at the appropriate place. Everything went fine. The counter ceased to show. Only when starting the (definitely second to nothing) diff files program standalone the counter would still appear indicating the days left on the trial license. I looked for a way to tell the diff files program about my newly acquired license key, but there seemed to be no way to do that. A reinstall didn't help either as the uninstall procedure does not seem to purge license keys. I decided to wait what would happen when the trial license would finally expire which happened today. The diff files program told me that the trial period was over and gave me the opportunity to paste my key. So in the end everything turned to good account but I don't think that's the way it should work. I thought I'd let you know so other users can be spared the experience. And if anyone knows advice on how to reliably purge a (trial) license key without formatting the hard disk I'd gratefully take it. Best regards. Paul