Did some more nosing around in the area and I think the crash was related to you somehow getting stuck in between your solid blocks and the chiseled strip ladder. I removed the entire ladder and a portion of the corner and I'm able to use the same exact coordinates of your last known coordinates as a tp without issues. Give that a try. If it doesn't work, then we can try a few more things. One thing I know will work is removing your .dat, but I'd rather not erase your progress and skills if we can help it.