Can't make floor finish reappear

[ChrisStubbs]

I have been coming and finding answers here on the Chief Architect forum for 4 years now. I have never had to ask a question before because I find most questions already answered. However, I have made a change to a file which for the life of me I cannot find what I have changed.

 

I had a crawlspace and decided to change to a slab among a few other changes. Now, the floor finish (maple wood) is present, but not visible anywhere in any view. I can tell it's still there because adjusting the finish floor thickness changes the molding height of the slab. In all layer sets, the floor surface layer display is checked.Stubblefield Plans.zip

 

Any help would be greatly appreciated. I uploaded the file and zipped it with winrar due to size.