I've done lots of troubleshooting and investigation on the net, but cannot find a solution. Please let me know if this is common or if a solution is known.

The issue is when I exit a dungeon, the loading screen comes up, then I get a crash to desktop with no warning messages or anything. I have come to the conclusion that the error is something getting corrupted in the game when I enter the dungeon. Here is all the differnent troubleshooting i went through:

This has happened on 2 different dungeons.
It happens to the save I made right after entering the dungenon, and I try to exit through the entrance, and the save I made near the exit trying to use the exit.
I've tried lowering video settings, windowed mode, and disabling all mods, still always crashes.
Here are the mods I'm using: HBE hardcoe and Balanced from Nexus. Darker Dungeons, Alternate Start Live Another Life, Frostfall, Imp's Basic Needs, Specialized Followers, SkyUI, Unofficial Skyrim Patch, Better Quest Objectives, from Workshop.
If I load an earlier save and go to the same dungeon, I can enter and exit with no problems.
I tried deleting the 2 .ini's and verifing game cache.
I have latest version of game and mods installed.
I've played over a hundred hours in the past with no similar issues.

So it seems to me that something happened to my save file when I entered that dungeon.

Thoughts or suggestions?