Just had the game crash on me after killing big hammer dude (The one before getting on the boat in the first area). I tried to leave on the boat, a cutscene started and then the game crashed.

Specs are as follows:

OS : Windows 7 Ultimate 64 bit
CPU : AMD FX 8350 Eight core processor 4.00GHz
RAM : 16GB Ram
Graphics Card : NVidia GeForce GTX 760

Anyone know what the problem is and how to fix it or should I just open a ticket?

Definetely open a ticket, it's the only way the gog support can gain knowledge of these problems and help you. I had not a single crash until now (currently on my way to Iona), so i can't help you there, sorry.

I had the same problem.

Same problem here!

Same problem here. Any fixes?

Crash could be caused by triggering an event and then starting another event meanwhile 1st still running.

Like when you approach house where soldier pin villager to the wall and than let him go.

I once trigered this animation and then trigered a fight with other soldier near by and it crushed.

Try to search all the map, kill everyone, speak to everyone (including crawling man at the start)
so there will be no event left not triggered.