Script trigger in White Ridge Sanctum freezing my game

[Drentrione]

There seems to be some scrip trigger that keeps causing my game to freeze up in White Ridge Sanctum.
Every time I try to go up the wooden walkway to the east of the first room in this area I lock up.
If I enter the console and toggle off script processing I can pass the spot where I am crashing, but if I re-enable script processing I immedietly crash again.
Trying to enable the papyus debug log has not helped me determine what exactly is causing it to crash.

Every time I try to load up the construction kit with Dragonborn enabled it crashes with one of the least useful error messages ever.

Does anyone know if this is a common problem, or if there is something I can try to get the construction kit to actually load up?