Bryan Heit wrote:

> Sorry, im_map_1 refers to a text-string variable which already contains 
> the quotations.  This is a macro, so pretty much all input textures and 
> files are defined outside of the macro (for flexibility)

May be the problem is related to your macro. I tried applying
a texture_map to a sphere and using image_maps for pigments
without encountering any problem.

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