The tournament file is corrupted. The corruption appears to be confined to the tournament history. I was able to clean it up enough to make it work, but the history text is corrupted a bit and I had to make some guesses one some of the times (I didn't check them afterwards for accuracy).
Really not sure what could have caused this. It's odd that it is only in the history, but that could just be completely coincidental. It could be corrupt memory or disk. I'd personally be suspect of the disk.