2-ton,
Have you tried the original triangulator app on the mac to see if it works?
I don't know anything about the mac but...
If the original triangulator app works on the mac, then it seems the mac might need the __MACOSX folder structure with some weird ._.DS_Store file stored inside a folder with the same name as folder that contains index.html (in the original app it's called triangulator, in my version it is called polygon).
You could try downloading this zip file to try on mac (provided that the original app works on the mac).
Attachment:
tryOnMac.zip [81.61 KiB]
Downloaded 93 times
I just copied the folder inside __MACOSX called triangulator and renamed it as polygon so that the same folder structure match just in case the mac expects it. I left the triangulator folder there since it doesn't hurt, probably don't need it but again i don't have a mac to test on so but it's worth a try.
After you try, please let me know if it simply works without the __MACOSX folder (previous
polygon_editable.zip) on the mac or if this
tryOnMac.zip works on the mac.
Edit: I just read somewhere that when you compress files on the mac it automatically creates the __MACOSX folder and that you can just delete it. So that means that the original triangulator app must have been created on the mac so logically, polygon_editable.zip should just work on the mac as well since it's just javascript. But still, let me know if it works on the mac.
PS: now that i think about it i should try it on a linux machine, no reason why it shouldn't work but i will try anyways just to make sure.