Did you read this thread? The answer might be RIGHT above this post.
One suggested backing up yer OT, empty reset, load your save back to OT.
Ive had it happen a few times, but i just delete them. I assumed it was me loading unacceptable samples, incompatibilty with old project new OS, or just a shitty CF card. I never do anything worth keeping.
Check above yer post. Maybe thatll help.