Not run and start beta v1.2-beta12 steam win10

Hi, sorry I don’t know if this is a error, or bug I already send a email to support. I find a addon or script on twitter this. It is a new addon. And I to try it but I can’t because aseprite not start and not show anything alert or error code, just not start in my pc (only beta v1.2-beta12 steam) my pc is windows 10 home and I add my configuration.

I wait response, thanks!. And sorry for my bad english.

The latest beta version is the one named “beta - Beta version - Preview features”.