Wow!!! Thank you so much d_deweyright. Yes, I deleted the .dat file and all the images came back, THANK YOU!!! (I thought I'd posted this message already but didn't see it, so posting again, sorry if it comes through twice)
Thank you Jim_Hardin too for all your help.
Still having problems with the scale of the windows in the Roxio Pro 12 though. Using the program on Vista the windows are much larger, especially when editing music and pan and zooming, however, on my Windows 10, when I go to edit a photo/video the window that comes up is so small, I can just about work on it. I have attached two images. Thanks again everyone for your help.