It was likely just the file--I didn't know about the MAT pose version, and the download from the store did unzip oddly, I remember. The rest of the contents of the file unzipped as usual, but the textures were still in Zip format when I opened the folder to check. They then seemed to unzip when I put'em through seperately, but I think the file I downloaded was corrupted. The creator has been in touch, and very helpful, so I'm hoping the store will straighten it out. Thank you for your responses---I was feeling very discouraged yesterday!