On 12/19/18, g00r00 said the following...
Yah I don't know. There was someone who was having the same crash a
while back with MPY that access message bases. It sounds like the identical thing, but we were never able to track it down to anything in particular.
That might have been me. Mystic and Python are both 64bit here for certain (there's no 32bit software on the system at all) however the machine I'm running this on is a chimera often used as a testbed for experiments, particularly for kernel security, so I don't usually give it too much thought if some edge case breaks something. It's expected that some software won't appreciate the oddball settings.
I remember I did manage to narrow down that the crash was occurring in the msg_seek call in msgread.mpy though if that's of any use for Pequito's situation.
--- Mystic BBS v1.12 A39 2018/04/21 (Linux/64)
* Origin: Subcarrier BBS (21:2/140)