I've been having fun on the PTRs, however with the latest PTR patch, I couldn't get in to game without getting a fatal exception. After skimming through the memory dump, I noticed that aUF was referenced. I then disabled aguf and was able to load up successfully.
This may have somethign to do with some of the new lua changes in 2.1. What's odd is that I had no problem with aguf in the previous PTR build.
I have included the memory dump, I hope it helps.
Let me conclude by saying I love aguf, and I really appreciate all the hard work that has gone into it. Thanks!