I have been trying to work on a house mod for the past couple of days. I have Skyrim,Update, & Dawnguard selected as the Master Files. I am trying to put this house outside of Windhelm, near the entrance. I have been working for about 20 minutes, I got the landscape the way I want it, then suddenly it crashed. I have had it crash other times as well it seems to be at random. No error message pops up besides the usual "yes to all" ones.

Does anyone else have random crashes?