I'm working on a small personal mod, I made some additions to WhiterunDragonsreach (haven't removed vanillia items, only added stuff). However, I've reached a wierd point where if I try to use the door in the back to enter the Dragonsreach Great Porch worldspace it instantly CTD (COC works though). I went back and removed the last thing I added (shelf and some potions) and everything works fine. Though I don't think it was those objects specifically that caused the crash, because if I leave those objects and remove something else, it also works fine, just as long as I don't add more stuff in its place. Any help would be gretly appreciated as I've been struggling with this for a week now.

I wonder whether http://www.gamesas.com/topic/1362739-grey-screen-on-coc-to-towns is helpful?

It might not be the same issue, but perhaps the workaround applies?

this is yet another in a growing and lengthy list of crippling limitations of the esp format.

this never happens on an esm

Thanks guys, checked the thread that was linked and the teleport script on an activator seems to be the best solution I could hope for. Unfortunately, implementing it has been a problem for me.

EDIT: Got it working, thanks again fellas, really appreciate the help, this was driving me crazy!