Thanks for the replies and info but I have tried them all without success. I can delete the files manually, but NOT by using (Control Panel>Internet Options>General Tab>TIF>Delete Files). Have tried with only 10 files and my PC will hang for 20 minutes. Likewise tried CCleaner and will hang if only the delete files option is checked. In Safe Mode, the filepath (User>Local Settings>TIF) does not exist (why is that?).