good timing on this topic: about two weeks ago, a little before PE came out, this started happening to me too. It happens with and without any mods, before and after PE installed. Oddly, it would only be on the first attempt of the day; subsequently, WOFF would load and run fine. I've also done two clean reinstalls, but same results. I've attached log files. I've noticed that the OffLog ends with "...calling WOFF dll..." but I couldn't tell you why it goes no further. Ideas anyone?