Windows 7 (64) / PP2012 / Questions regarding MC6 / PZ2 / Library thumbnails:

 

I am refreshing myself on how to manually change a material file to a pose file.  I am following this tutorial:  http://www.sharecg.com/v/19993/browse/3/Text-Entry-Tutorial/Creating-a-MAT-Pose-Pz2-file-for-Figure-Textures

which I know is a little dated but should still serve my purpose.  

Now if I recall correctly, on my old system, when I changed the extension to .pz2 - this changed the file type.  But on this system - the file is still showing as a .MC6 file even after the extension change, although it does come up now in the pose folder of the Poser library.

Question 1:  Is this okay?  Is the file still going to work ok or is there something else I need to do to it on Windows 7 to make it show up as a .pz2 file in this folder? 

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This tutorial says to change the poser version to 4 so that it will work with earlier versions.  I thought I recalled changing it to 'All Versions' or something like that.

Question 2:  Is it correct to change the version in notepad to Poser 4 or should it be something else?

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More than half of my old .png thumbnails for the library do not work anymore.  Including this one.  Instead I have the blank man holding up his hands saying "no preview".  I verified that the .png is in the folder where it should be.  It is 4kb.  

Question 3:  Does anyone know why this is and/or what I have to do to make ALL of my preview thumbnails work correctly in the PP2012 library?

I am:  aka Velocity3d