What should I do if the program crashes or freezes while importing
What should I do if I receive Some file in your project have been moved or missi
After you save your work, it will be saved as an editable project (.wsfproj) file, which records all the edit information within your project, but does not store any imported media files. Instead, the .wsfproj file references that media. Therefore, if you move, delete, or rename any of the media files and try to open the .wsfproj, it will be unable to locate that media associated with the project. That is why you receive the error. Currently the only work around is to reload the missing file(s) to the project again manually.
To avoid the problem, it is suggested to keep all the media that are associated with the project staying where they belong to be originally.
Why the playback on timeline appears to be lagging, out of sync?