Hi, hope you can help me with a roof problem.
I want to build a house that has a roof on the first floor, that goes on the left side all the way down to the
ceiling of the ground floor.
You can see it in the following screenshot:
i839.photobucket.com/albums/zz319/Thjodolf/Die%20Sims%204/Issues/RoofProblem1.jpg

From outside it looks like I want it to be. But from the inside, I have a nasty wall that I cannot erase. It's not possible to erase the wall
with the hammer-icon or by deleting it with the wall tool. It always shows a red error message that says "Nothing there to erase" (translated from German).
i839.photobucket.com/albums/zz319/Thjodolf/Die%20Sims%204/Issues/RoofProblem2.jpg

Do you have a solution for my problem? As far as I remember, I did some similar houses in Sims 3 without having any issue.

Thanks in advance, Thjodolf

P.S.: Great! I am not allowed to post screenshot-links?!?
I can post it without the http at the beginning.
Would be nice if you copy the text into your browser to see the screenshots.