Missing Projects in iMovie 09 after upgrading to Mavericks

Question

Using iMovie 09 (8.0.6)
Before Mavericks came out I moved (copied) my iMovie Projects and Events to an external hard drive (from within iMovie, not the OS).
Everything was where it should be and worked properly after I was done.
My first time back into iMovie since upgrading to Mavricks and now my projects are missing in iMovie. The projects are present on the external disk in the OS, but they don't show up under the external drive from within iMovie's Project Library window pane. The events are present on the external when viewed from either within iMovie or the OS.
I've found the solution to delete the UpdatedToiMovie10 file, but since I didn't upgrade iMovie, that's not an option for me.
Anybody have any ideas?

Answer 1

I do suspect there must be some incompatibility between Mavericks and iMovie v. 8 because all was working in your previous operating system (was that ML, Lion  or Snow leopard?) and the OS upgrade should not have touched your Projects folder (it is still at the root level of your external drive isn't it?.
Did you get iMovie 10 when you upgraded to Mavericks?  (I suspect not because you would have needed to have iLife '11 and then you would have had iMovie 9).  I am wondering whether iMovie 10 would be able to see and update your missing projects.  Trouble is that would be a $15 (I think)  gamble which may not pay off.
(Actually iMovie 9.0.9 doesn't launch at all under Mavericks on both of my Macs for reasons I still don't understand - for most people it works OK) but I was able to update projects to iMovie 10 and have now moved on to FCP 10.1.
Geoff.