Bugged Quest
 

I have a problem with a quest (labeled as main, with a crown) called "Indestructible obstacle". Its the quest about blowing up the pile of rocks between Marshan Swamp and Grinwort. I talked with the alchemist about braking the wall (despite there wasn't ques mark over his house) and then I started the argument between him and old witch who eventually sent me to her old house for some records. The problem is that I can't enter her old house and there is no quest mark over it either. The quest mart stays over alchemists house now though.

If anyone knows console code for those records this would be helpful either.

Did you try after visit witch house come back to alchemist house and talk?

Yes I did, and there is only the witch there, and she says something like "I can feel Viking here" and after that there is only one dialog option - to buy troops from her.