Hi Igor - I have now managed to open the file but it is totally corrupt and I am not able to restore to a previous version because there is no previous version.  When I did manage to open it it only had half the photos and no time for each slide set.  They were all zero.  I have been trying to work with the corrupt file and deleted some slides that were causing a problem.  However I have noticed now that when I "preview from this point"  the music is not synchronized to the slide - the music just starts from the first track again.   Very frustrating.  Thanks for getting back to me - I appreciate it.  PS  I have tried to re-install the program. 7.5. Regards, Christine Barker