Sadly, even with your help, I still cannot solve the issue. I appreciate you for helping me out though. I think my issue is something others rarely encounter using this script.
I had this happen to me but then I did this: Users can also re-enable dialogs in Aseprite by selecting Edit, then Preferences, and then Alerts and ticked a box to yes that said "open a sequence of static images as an animation"and then followed the steps that sprngr recommended and it worked for me. Hope this helps