I have a rather large imovie library on an exfat drive (I am now learning that this is NOT the best way to format a drive from another post). I think the library is corrupted. I can open imovie with another library. I can open the package contents and see the individual video files. It's might be my only copy of the library (I know, I know, backups). If I cannot get ahold of a prior copy of the library is there any way to "repair" an imovie library?