Why does it say the file does not exist when I open my previous project?

The reason is that the source files (photos/audios/videos) are deleted, renamed or moved to another place on your computer. This situation may also be caused by the removal of your external devices where the source photos/audio/video files have been saved and you need to re-connect your external devices well and open the project again.

When you see the message, the product will remind you which file in which path cannot be opened; you can double check whether that file has been changed.