Well Talos, Hmmmmm. . . .
Did you talk to the guard? Make certain the person with the writ is giving or using it? Of course this would HAVE to be, wouldn't it?! That was silly on my part. I know people have had touble with this before. It was once a problem that the patch was suggested to fix. I searched some threads and bumped one up on problems with the writ. You can search for "writ" threads and read some, there may be an answer there that I missed. Perhaps when you go back, it will work for you. I hope so anyway. Let us know how you solve this problem. Sorry not more helpful. Good luck.
Mammawlin