There is so much here I didn't see this posted, and apologize if any of this was already covered.
One error was many libraries were being called but failing in cartographer in the standalone.
When installing the Ace2 Lib these errors disappear.
I can see where developers would miss this as they would most likely have Ace2 Lib already loaded. lol
Another issue our guild ran into, and easily fixable, was duplication.
We use UniUploader/UniAdmin to update all our wow ace addons.
The new Cartographer pack now installs all it's "pack" modules in sub folders.
So old "pack" modules like Coordinates, Battlegrounds, ect, are in main addon folders.
Just delete all Cartographer addons, and reinstall new ones. (note you wont lose map notes doing this)
Then you will have no duplicate errors when loading.
I hope this helps with these minor issues.
Thank you WoW Ace for fantastic addon!