This seems like a path-related issue with the Steam version of Aseprite. Mind if I ask where your Aseprite executable is located? @Merrow’s Cowl is running into the same issue on Linux, so this is helping me narrow it down further.
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Hey, I'm really sorry but I forgot to do one of my major steps for scripts. My antivirus has a knack for blocking things in a way that makes it hard to realise its the antivirus... Sorry for the wild goose chase and thank you for putting the time in to helping me with the problem!
Avast was blocking without saying anything the script from happening.
Sorry for the time wasting aha. And thank you for the super useful tool!
TL;DR Avast is annoying