I recently upgrade to 1.4.3.3433 and now everytime I start a sync to my iPad which in turn triggers a transcoding/conversion, Plex almost immediately becomes unavailable. I can see from top that the plex transcoder thread is using nearly all my CPU, but it never seems to recover and eventually the transcoder stops and Plex is still unavailable. Once I restart the service, Plex comes back and then starts the sync and becomes unavailable again.
Debug (not verbose) logs attached.