ToME: the Tales of Maj'Eyal

I've had this happen to me a few times now on different characters.

I'll escort them through the level to where they direct me, and there will be no portal. They'll move around a little bit as if trying to move towards it. When I ask "Where is the portal?" They will reply with "The portal is very close, to the ???".

It doesn't happen that much, and I have no clue what would cause it. I do have some addons that change followers a little bit: Succor and Easement and Escorts Enhanced. Don't think any other mods I have would mess with them, but here's my character with what addons I'm using:http://te4.org/characters/131447/tome/1 ... ab74137b0d

Thanks!

Edit-
I did make a backup of the save in case someone wants to take a look, but I don't care too much about losing 1 escort.

terrain changing effects can and will annihilate the portal. don't know if there is another possible reason.
meteorites have already been even recorded doing so in one of the devion's videos. i believe it was the shadowblade playthrough, in daikara.

Problem seems to be caused by one of the escort addons.