This update fixes two crash bugs, one caused by loading a combat with a firing beam weapon, and one that happened when a monster nest message was meant to pop up.
Apologies for those affected by the crashes.
Addendum: I've now released version 1.0.13.3, which has fixes to networking, hopefully eliminating desync and reconnect issues. There is also a new server called "Europe (New)" which uses slightly better networking code.
Added addendum: Version 1.0.13.4 fixes a particularly obtuse bug caused by the player having the move command active while a tentacle attacks. Yes, really.