Opening Score Causes Crash

I am using the current nightly build (2012-08-23) and the attached score causes Musescore to crash when I try to open it. It was originally created in verion 1.2, and then opened in version 2. I was working with the score and removing/simplifying parts and it got itself into this state where it cannot be opened anymore. I can go back to the full orchestra version and do everything again, but prefer not to if someone can help. Also, this must represent a bug somewhere in version 2 that it got into this state to being with.

Any help is appreciated.