iMovie Mavericks Not Saving Projects

Vlogging is my job. Like everyone else who owns a mac, we all upgraded to Mavericks and by extension: iMovie like apple had wanted us to do. Yesterday on my typical vlog "due date" I had spent the typical 6 hours in postpreduction to finish my vlog as intended. I'm on my 500gb macbook pro (if that matters at all) When I was done with my project, I closed out to search for an "export using quicktime" function on the internet. Much to my surprise, when returning to iMovie my event and project for my vlog were completely empty. I spent the next 20 minutes in a panic trying to find my edited video. Nothing

So I figured that maybe I should have just "shared" my video first. It seemed kind of silly since one of the big selling features to iMovie has always been simplicity, functionality and the fact thatyou don't have to worry about "saving" is very reassuring. Like anyone else would do, I checked TM backups, no event for my vlog, no project etc even from the backup that happened while I was working on my vlog.

I decided I'd bite the bullet and start from scratch with my original footage. Everything had gone quite smoothly and again, 6 hours in I had reached the point of finalizaiton with my project. Since I had completely lost 6 hours of time I decided that I needed to get this on YouTube as quickly as possible. This time I took things very slowly and catiously. I had clicked Share to YouTube, realized that it would take a bit, turned down the brightness of my screen and went to bed.

Today I woke up to find no trace of my vlog in my Video Manager on YouTube because not a single bit of file had touched YouTube. I wemt back to iMovie to reshare my project and boom, no sign of my project ever having been touched.... Just another empty event folder.

12 hours of work in one day was spent editing my vlog via iMovie just to find that at the point of completiion my events/projects haven't been saved.

What do I do to ensure this doen't happen again, why the **** is this happening and are there any other users who are expericing this horrible issue? It's already bad enough that most of our projects were deleted when converting to the new version and that we have to hunt for basic features and to see whether or not we're on the right footage library with the right project timeline.

Thanks Danny