Whiterun moving objects/actors and disappearing buildings problem

[xen999]

OK, so I play a very modded game and yet, so far, everything had been relatively stable, until last night when I encountered some pretty peculiar issues that are leaving me completely baffled. I visited Whiterun for the first time, and everything looked perfectly normal even with the mods altering the city and its textures (see list below). However, when I got to the marketplace, I saw many items from the merchant's stalls and even some actors being dragged across the floor by some unseen force in the direction of the Bannered Mare and eventually getting blocked by the building. Some items that wouldn't move had their texture stretched instead. I ignored this for the time being and went exploring the sewers. When I came back out, most of Whiterun's building were now gone, with just the doors left standing. I can enter the buildings still and the interior is just fine, but coming out again, the walls are still missing. I am perplexed to say the least! Exiting and restarting the game fixed some buildings, but not all. Anyone have any clue to what's going on here?

 

- JK's Skyrim

- Deadly Shadows for JK's Skyrim

- Skyrim Sewers & Outlaws Refuge with patch for JK

- Noble Skyrim Textures w/ SMIM patch

- Mossy Whiterun Stonefloor Redone

- Mossy Whiterun Walls

- Pompous Dragonsreach Door

- Epic Gate of Whiterun