Every time I load my saved game and spawn at druid grove vendor Arron, I start trading my items. After trading, I did a quick save. This always crash the game. I tried disabling cross save, but problem persist. I tried normal save also crash.
I did more test and finally found out that if I sold my companions items, no crash occur after when saving.
[Suspected root cause]
Then, I sold item in my main character inventory after, done and did a quick save. Crash. So, it seems I can't sell items from my main character ONLY. He is a bard gnome btw if that matters to Lariant.