Secondly, are we supposed to be able to access the arcane tower? because every time I go to that area the game at some point crashes on me.
If the crashes persist despite Crimsonrider’s advice, maybe the problem is tied to the inventory? The main symptom would be that the game can no longer save, crashing when you reach the auto-save point near the tower.
The culprit as I understand it is that some inventory actions corrupt your game somehow. The fix would be to return to a save that happened before the offending manipulation, though it’s not easily identified.
I assume, since you’ve encountered Omeluum, that you’ve been trading in the myconid colony and sorting your inventory a bunch. Try loading a save before trading. After the trade, do NOT manipulate your inventory in any way, then cross your fingers and head to the tower.
Edit: you can equip the stuff you bought, but don’t move things within the inventory. Moving things to the party face before sales is fine too, as long as you actually sell everything you’ve sent to your Sorcerer.
Edit 2: I’m at most 70% sure the information contained within this post is accurate. Hope it’s still useful.
