Hi there, in need of some assistance,

I was in the middle of editing a movie. I had already edited a substantial portion of it. Then suddenly, as I clicked 'split' on one arbitrary clip, the clip disappeared. As I moved my cursor over the other clips, they too disappeared. The whole project froze and I could no longer work on any of it. Luckily it was saved. I have tried reopening it several times, all to no avail.

Please help!

UPDATE: On closer inspection, it appears that the program only crashes when I attempt to trim this one clip. Oddly enough it's an already split clip that I had carved up several times before.