2011 render appearance all gray

[phoffman]

I am trying to render a project and about half of the materials render a flat gray - no texture and not the correct color. in the materials > render appearance dialog everything is correct as well as in the 3D view, but when I render they become flat gray items.

specifically CMU block and fluted walls. is there any fix for this?

[dhurtubise]

Could be that the textures are missing. Check if the library is installed properly.

[welcomehomestudio]

Is the correct phase filter selected in the rendering view properties? See attached pdf. The existing brick wall defaults to grey when the phase filter "Show All" is used because the "Existing" phase is "overridden". "Show Complete" has the Existing phase displaying "By Catagory".