Yeah, the game's main strength is the Coop, pitty it too has many problems.
Coop can keep an average game alive for years, well if it is working properly.
I am going to try again, maybe droping all my gear before I place it, thinking there could be some conflict, if not I am not sure what could cause this.
If others are not expencing this then, must be something I broke just not sure what.
Edited
Ok it was resolved, didnt have to drop anything .
I noticed that I seemed to have placed the Relic on a differnt pedestal that I did orginally.
Maybe the bug was that somehow I was allowed to place the Robes in the incorrect spot and the end level is triggered by placing in this spot normally only the last relic.
Trust me, most of the names I have been called you can't translate in any language...they're not even real words as much as a succession of violent images.