Game Crashing

I don't know how to edit. This is my Dx Diag... Also, I only have the SNB mod. No other mods in the game. I did a repair after my original post. Went back into the game, build mode, tried to resume my build (room at the edge of the pond to make dock). I got as far as placing a diagonal room. Couldn't make it larger, smaller, couldn't raise the foundation. I could move other objects around in the house but couldn't adjust the room. I went to save and that is where it stuck. I had to use task manager to close it. This is very frustrating. I saw a solution on someone else's post. He said he went into system....great, but what are we talking? Computer settings, game settings?