They are generally obsolete, but are used in full force by DAZ - one supposes as the widest support.

An RSR file is the 'file' version of a MacOS Resource (which is part of the filesystem on Mac, not a file) so that it can be used on Windows.  It contains information and data.  For Poser, this usually means thumbnail image data in an embedded PCT format - but can also have other information such as OBJ geometry for Geometries.

My question is this: how are you attempting to apply the textures?  An RSR is only required if it is a Material or MAT pose so that it is visible in the Library.  Even then, an RSR is only one form of thumbnail - Poser can also use PNG images as thumbnails - and if the texture information is in Poser format (PZ2 or MC5), it just needs to be in the proper location in the Runtime Library to be seen in the library even without a thumbnail... (?)  Otherwise, you can add texture images to an Image node by selecting it using the file reference on the node.

So, I'm trying to figure out why you need an RSR file.

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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