I can't get psd puppet files to open in photoshop

Hello all. My issue is I can't open downloaded PSD puppet files in photoshop. When i do i get an error, which I'll post a picture of below. However, the example puppets work just fine in opening in photoshop. I've tried some file converters for the puppets but even the online converters say it'snot a supported file format. I'm curious how to open these files in photoshop, thanks! This issue is on windows btw 

 I'm very new to the software and just trying to get started using a blank downloaded template. I eventually have a goal of drawing stuff, scanning it, and making some fun puppet stuff for youtube lol. Thanks for the help!