I've the same bug crashing the game twice, so I thought to register here and report it from here too.

The first time the game crashed I was in the market in Cyseal, buying stuff. I had Scarlet, the second character, selected and opened Roderick's inventory to give her the money to buy magic books. When I transfered the money the framerate went down, the NPCs thought I stealed the money, when obviously that wasn't true, then the guards came, asked me to return the money, to what I said yes, then the game froze and crashed.

The second time was basically the same. This time, with Roderick selected, I gave the money to Scarlet, this was outside the Mayor's house. This time the game didn't crash and nobody thought I stealed the money, so I went and bought the magic books without any trouble. Then I decided to buy stuff for Roderick too, so with Scarlet selected I transferred her money to Roderick and the game instantly crashed, so I don't know if the NPCs would have marked that as stealing.

Both times the game crashed I was in the market. I had one companion, the female warrior that sees Source Magic everywhere, dunno if that's important. I can upload my save file if someone wants to try to recreate the bug.