Hi not sure if anyone has had same error message(attached) had my video on the timeline and added a mp4 music track. Tried playing and the error message appeared and the music would not play.
The looks like one of the support files the program creates is corrupted.
With Movie Studio closed, ensure you have saved the project, in the folders, D:\drone beach\ if this is where the video file(s) is/are, and the AudioTemp folder, the exact location is specified in the program settings, delete the video support files with file extensions .H0 and .HDP and the proxy file for the video clip(s) causing the issue, they will have the video clip name as part of their name.