I've seen the freeze/crash occur when I select a unit, when I command the unit to move to a new location, twice when I push the 'select new research' button on the lower right corner of the UI. Most of the time it occurs during the AI's turn and I can tell it has progressed through the AI's turn for quite a ways before freezing. I have no memory of seeing it freeze when I can visibly see an AI unit moving, but then I can rarely see an AI unit moving anyhow.
One other anomaly I've noticed - the graphics/icons from the CSD mod are missing in the lower left corner of the UI when viewing the city build view. However, the icons are present in the tech tree. This game is the first time I've seen a problem with CSD images and I normally use the diversity graphics package which is loaded at the end.
My load order is ModList, CivWillard, InfoAddict, CSD, VEM, Unofficial Diversity. Perfect World is selected from the Map folder.