Building bugs (specifically roofing)

I’ve come across a pretty game haulting bug unfortunately, when I try building a roof sometimes I get the following error:
http://images.akamai.steamusercontent.com/ugc/447329129845409640/C2134E183C5D7CB6CF64EDD78A2FDCB6BBE4F518/

This usually happens when adding a roof onto a building with extensions, I wouldn’t mind but this stops you from being able to complete or delete the building :frowning:

Any chance we could see what the kind of building that gives you these errors looks like? In plan view obviously since they aren’t getting built.

same bug, alpha 10.5-10 (x64)

http://puu.sh/iFBgq/b9e25d4a27.jpg

workers stopped working on the building after the error.

I got the bug which I cannot build walls at all, nor roofs