Sorry to have bothered you then. I've since replicated the problem with just the Unnoficial Patch installed, with the command you just mentioned ( cow 32 -4 ). My lack of debugging experience led me to point out DynDOLOD as the cause when it clearly is not.
It seems to happen only sometimes and if I go away and come back it's fixed but I still can't learn the word. Here's a papyrus log of that if you are curious. I've got no idea how to debug this further though.
Thanks for the info.
It maybe teleporting to close and right at the edge of the trigger causing errors. Try tamriel 33 -4 and then walking to it. tgm for god mode to kill the 3 skelotons.