Hey guys just thought I'd let people know as I figured this out last night after a frustrating hour and a half of sorting through the multitude of mods I have installed.
It causes CTD around certain areas, particularly Lake View Manor which is a pity because it's a great mod, hopefully the author will release a fix soon.

Hope this has been helpful

This would be better placed in the http://www.gamesas.com/forum/183-skyrim-mods/ or in a message to the mod's author.

This is caused by Bethesda deleting several Navmeshes in vanilla Skyrim with Hearthfire, so any mod that used that meshes will cause the game to CTD when used in conjunction with Hearthfire. There is one Falkreath that was used by Scenic Carriage that can cause this, and the other I personally know of by now is in Breezehome, which causes any mods that modify Breezehome at all to cause CTDs.