Muttoncop

Hi all!
I have extracted the W3D files using finalBig and I have some questions. Namely, as I can't imagine this hasn't come up before, if anyone has any kind of directory dictating where files might live? I.e. GB- Gondor Buildings, etc. I can't for the life of me find Arnor/Fornost building files.

Secondly I'm using Blender with OpenSage to import these files and while most are good, some of them have issues with the textures. I looked at the paths and found that a bunch of texture .DDS files are just basically purple screens. Is there any kind of known FinalBIG extraction error that could corrupt or otherwise mess up the texture files?