Crusader/Azata bug

I believe I have encountered a bug. While playing an Azata in Crusader mode, there is a personal quest that, upon completion, exits a character from the laboratory on the far western edge of the map. Travelling back to Drezen, my character was stopped by a demon fort. Thinking that the only way past this was was to destroy it, I sent an army towards it only to find out that there were no trails going there. I was therefore forced to turn off Crusader mode in order to return my personal character to Drezen before Corruption reached level 3. Suggestions on how to get around this flaw in the game would be appreciated.

Same thing happened to me in my azata play. But I had started building the teleport circle in drezen so only had to wander around for 1 day before it was finished. Then I teleported back to drezen