I have spent several months scanning old travel album photos into Printmaster Platininum 17 program & creating new album pgs. I saved these files to a CD until the entire album was ready to print. Yesterday I could not open the saved files from the CD. Msg just said "unable to open file." On a whim, I copied the file to My Documents. I was able to open it there, edit it, save it as PDF file which prints faster, and print the pg. This worked for 12 pgs. Today I still can't open the file from the CD but now I also cannot copy the file to My Documents. Error msg says "Cannot copy {file name]:Invalid MS-DOS function." When I try to open file from CD, the Printmaster 15 logo appears and then a msg. that Printmaster 15 has incurred a problem & must close. I have not had Printmaster 15 on my computer for at least 2 yrs - it was upgraded to Prntmaster Platinum 16 and, 3 months ago, to PMP17. When I open PMP17 from its shortcut, the logo says "Printmaster17." When I went into Properties for the file, I clipped on "Open with". The only option I am given is Printmaster15. While trying other options, I did at one point see something that said Windows has Printmaster 15 registered. I'm not sure what this means. Sorry this is so long but I wanted to give you all the info I have.