I wanted to copy 1500 files to a DVD. Total size is 1.3GB. I was in the Build mode. When I selected all 1500 files and tried to add them to the queue at once, the "file not found" error message popped up. I don't know what that means.
So I played around and selected fewer files. The program would let me add the first 936 files (740MB) to the queue, with no problem. Then I selected the rest of the files and added them. When I took that one extra step, the error message never popped up.
I also thought my filenames might be too long. So I renamed all the files to File0001.jpg, File0002.jpg, etc. When I did that, the program would let me add all the files at once. No extra step.
Does anyone know what's wrong? Thanks for your help.