This is a bit old now but I'll go ahead and confirm that it does have to do with the ITM records, as I just ran into and resolved that problem myself. If anyone else sees this, remember that it's not necessary to reinstall the game completely. Just verify the integrity of the game cache for SSE on Steam and it will replace all of the ITM files. Honestly not sure if cleaning is necessary with SSE, I'm running 100+ mods and didn't encounter any CTD's until I cleaned the esms. Oh well, hopefully this helps someone!
