Photoshop :: Won't Open Fire.msh File?

During the process of creating my FIRE image, I saved the Liquify distortion (.msh file) to my computer. I've now gone back to the directory to use it. It's clearly listed there (Fire3-Liquify.msh), but when I click on it, Photoshop refused to open it saying:

"Photoshop could not open this document because it is not the right kind of document."

When I try to open it directly from within Photoshop by opening the directory in question, it does not even show it, not even if I set the Types of File to ALL FILES.

What gives? What am I doing wrong? I thought the distortion mesh file was supposed to allow me to reconstruct my Fire image and start from that advanced step instead of starting from the beginning.