FCPX Events and Projects not loading from internal hard-drive

I have a weird situation happening with Final Cut Pro X. When I start up Final Cut, I get an error message stating:

"[EVENT NAME AND FILEPATH]/CurrentVersion.fcpevent is not a valid location for a document file.

Open documents from within Final Cut Pro."

None of the events and projects on my internal hard drive load once this occurs. I can still see my folder structure in my projects, just none of the projects themselves. I can also see any events and projects on any external drives I have plugged it. It gets weirder; if there are no external hard drives plugged in, it automatically creates a new event with the day's date. If I quit and start up Final Cut Pro X again, that event will give me the same error message as above, and also won't show up.

And this is where it gets weirdest: I've tried deleting the preferences, repairing disk permissions, getting rid of any folders with 'DCIM' in the title, restarting the computer, even deleting FCPX and reinstalling it from the app store but the problem persists. I had this happen back at the start of December as well, and it seemed to resolve itself after a night. The problem appears (so far) to be totally spontaneous; I was working in Final Cut Pro at the office just fine yesterday, but when I started it up at home, it gave me trouble.

I've seen a similar issue on the forums here and at Creative Cow (I posted the same question over there), but so far I haven't found any explanation for what causes this bug or how to fix it. Has anyone run into a similar problem, and is there a solution that reliably fixes it?

PS I'm working from a 2009 Macbook Pro running 10.6.8, using Final Cut Pro v. 10.0.7

PSS: If anyone is also having this issue and desperately needs to get to their events and projects, a temporary workaround is moving them to an external hard drive...I tried it, and Final Cut Pro was able to access all of my materials. Still not an ideal solution, and it still creates a new event each time it opens (which then provides the error message about how it can't open said event next time it opens).