Really, it looks really good at first. The mega expansion looks good on the local map as you arrive into Balmora. However, I noticed there were tons of Yellow !!! in almost every single new building. Does anyone know if someone is ever going to clean it up? I guess I will just remove it for now.

Please check your installation before you give up. Tons of yellow usually indicates some meshes are missing - ie, didn't get into the folders properly.

If you use Slartibartfast's http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=4324 (as I do) it does not include all the resources from Gorg et al's original plugin. You need to install that first and then Slartibartfast's.