It makes me wonder if the changes made during post-processing where they applied a higher version of Havok to the models are part of the problem - as that would have 'changed' the models just before launch and after the level designers were 100% done making and fixing the cells. One has to imagine that when the cells were created, the level designers could see everything just fine. I've tried changing all sorts of settings in the GECK to no avail as well. There are different flags on the collision node than other models, but of course we can't read the exact meaning of those flags (if they are even related to this). What I have learned is that we can 'Preview' the item from the GECK just fine, and that NifSkope seems to load the objects without issue. No response yet of course, that sub-forum is like an active volcano of new threads and posts. They are very likely un-related, but I took screenshots of the REPCONN Test Site Basemant cell (in that I could only see half the objects), and asked if they were related. I actually reported this as yesterday, as possibly attached to the problem I have been having (in one cell in particular) of falling off the world geometry.