wow a three year old necro post... is that a record?

Anyways, I didnt bother to read back as to what this window is supposed to do, but the last expansion had some major ui changes. I dont think to many recent mods didnt need any tweaking, nevermind 3 year old ones.

Sorry if this is a non answer....

The image and/or button style references from this mod are probably pointing to resources that were either removed or have been modified such that the area of the image file is now black.

Kosmo's mod was I think the very first performance mod. You might have better luck with something similar but more recent. Try Goldi's.