You shouldn’t need to put the file in the scripts folder.
It does sound like a file access issue, can you load any other files into Aseprite that are on the same drive or in the same folder as the extension file?
Just routinely I’ll ask as well - what Aseprite version and OS version are you running?
If I understand correctly, you cannot access any other file in the same place as the extension file. This would point to this definitely being a file access/permissions issue.
You should try moving it to a different place, or change the permissions of the file so it’s executable by the current user.
