The last thing it appears to be doing before the most recent crash in the logs is performing intro detection for a couple of CSI: Miami episodes (S01E07 and S01E08), which were apparently recorded from the DVR (.ts files).
Disabling items in the scheduled tasks settings does not eliminate all maintenance tasks. There are some library tasks (credit detection, intro detection, ad detection) which are still run, depending on server library settings.
Try setting the following to “never.”
Settings → [Server] → Library → Generate intro video markers
Settings → [Server] → Library → Generate credits video markers
There could be some problems with certain recorded files which are causing issues leading to the crashes.
