When ever I load the Oblivion_sk esm or the Morrowind_sk esm. all of the(world space) object are gone. Interiors seem to be fine.(i've already tried reistalling the esm's and converted meshes files.
Hmmm, yeah, I had a similar problem, but I couldnt even see objects in interiors. I just reinstalled Skyrim and Skywind and that seemed to fix everything. I'm pretty sure it would work the same way with Skyblivion.
It worked with skywind, but not with skyblivion
Edit: I've even tried converting it myself with Chuvakin 0.95, but I had no luck.
Sounds like you're missing some texutres or meshes but the reinstal should have fixed it hm....