Madtyke

Thanks

I am new to paint.net but didn't have any problems using it or saving files as jpegs until tonight. For some reason after altering the photograph say 123.1 and then saving as 123.1.1 as a jpeg it appears in my picture folder as an unknown file and cannot be opened! Am I doing something wrong or is there a bug. I received an update tonight and have had this problem since then. I even re-installed but to no avail. Help?