of course, any RE-setting of things by either Poser or Queue Manager on file opening is some sort of nightmare.

Using images in multi-purpose situations is complicated, one might want to have a gamma node before the bump-slot to cater with things, but one image migt be used for color in one material and for bump in another.

To complicate (or simplify) things even more: Poser will convert each file<.ext> to file.ext.exr in TextureCache, and assigns the gamma property to that one. Using files with the same name and type, but different paths can therefor lead to somewhat unexpected results. On Mac, without extentions, things may be worse / different.
The EXR setting for the file is as set in the latest node it's referenced, and then shown in all nodes that refer to it throughout the scene.

That is: until SR3.1. With SR4, we've got an additional challenge on top.

- - - - - 

Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though