HELP?? "LOCK" on new X6 Photo Paint images??

For no reason I can comprehend when ever I change or create a new image in X6 Photo Paint and save the file, the new file has a "LOCK" applied to it??? I've tried changing the permissions in several ways and nothing helps - It's been just fine for years until the last 2 weeks - I am disabled and dealing with an incurable disease  (NO SYMPATHY REQUIRED) and can only set up at my computer for a few minutes at a time - ANY and ALL help would be appreciated!! Thanks in advance - DB