Here's a picture illustrating what I'm referring to:
When he created a new normal map and environmental mask, (as well as the more major night version of the window, since it was vanilla and diferred largely from the day one in his pack), he accidentally put a copy of the old night window onto the texture that didn't need changing (as you can see, other than that window in the middle, the texture is the same).
Edit: derp, the windows in the right hand corner are different. In my personal copy of this texture I just pasted from the original ottdrim01.dds the middle part that's covered by the old night glow map that was erroneously included in this texture.
