Since upgrading my MacBook Pro to Mavericks -- and thus automatically to iMovie 10 -- I have twice had in-progress projects disappear from the "All Projects" list. The count of project is correct (5), but I can only see the two that were in the previous version of iMovie prior to the upgrade. This seems to happen after closing iMovie (or having it crash) and re-opening it, but not every time. I have searched on my hard drive and cannot find any evidence of it, yet iMovie is counting something that seems right. Does someone know where I might find my in-progress movies?