Nike!  First test, it works!  You've done a yeoman's work, good Sir Snarls!

     Work flow is to open a scene, set the gamma of every image map in every material zone of every prop.  Run the magical Snarly script.  Re-save the scene.  Close Poser.

     Re-open the scene.  Note that gamma settings remain unmolested.  Rejoice as is your wont.

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     Snarly,  I'm going to check what happens when render jobs are sent to remotes on a network via Queue, but give me time.  On my primary network, one workstation is currently disassembled, and the other is already busy.  On my smaller network, the remotes have a different build number than my laptop Valkyrie, and a recent update to Avast! IS flags a false positive when running the Poser/Queue update, so I'll have to disconnect from web, shut down Avast! IS, run the Poser update, then turn Avast! IS back on and re-connect to web.  I have a report filed to Avast! on this issue.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5