All walls in file suddenly transparent?

[dammitvisio]

I've come back to a floorplan file, and suddenly all my walls in the file have gone transparent. The Shape Fill section says they have solid or gradient fills, but they appear as just outlines both on the screen and when I print. This is only one file and hasn't affected others.

Please help! I don't want to start the file again

[Paul Herber]

Ribbon Home -> Layer Properties
Select the Walls layer and adjust the transparency.

[dammitvisio]

Thanks Paul, unfortunately, that hasn't helped. Any other ideas?

[Paul Herber]

Did you edit the master shape in the Document Stencil?