Select Lith Seratta in the city Timbraikat. Walk to the Slaver Caravan to the west. Offer Daxus a job, pay him 120 gildar, and tell him to attack his former employers. Game now crashes for me. (Any other quest answers work.)
Not sure if this is 1.3 specific.
Savegame:
https://docs.google.com/file/d/0BwWub_tVgp0PU2p2aGQ3blRPZGM/edit?usp=sharing