I updated to r10678 and started playing in the relay browser. I noticed I was getting an "unexpected error" message and debug log after every adventure.
I reverted to r10675 and the unexpected errors continued. It appears to possibly be related to the charpane override, as the override is sometimes not applied and I was also getting an error from it, "CHIT: Error parsing refresh".
Not that this happens to me, but 10679 fixes something relevant to concoctions and adventures, which is relevant to sorting the concoction list, which generated those stack traces...