In all the years I've been playing Morrowind, this is a new one on me. Shirts show up in first person, but both shirts and pants disappear on the paperdoll in the menu and third person camera when I put armor over them. Not sure what's causing it. Here's me modlist, aside pure texture replacers.

Not pictured below are Dirnae's Beast Animation mod (which I've tried removing to no effect) and the fact I'm running this through a Steam copy on a USB removable HDD. Would be awesome if there's a fix for this as I rather like the look of my clothes poking through the gaps in the armor. EDIT: Oh, right, and I'm running MCP 2.1.

EDIT(again): And all Warnings.txt says is: