I eventually resolved my issue by reinstalling the main Cartographer module. Interestingly, using the "reinstall" option in the updater app did not help, but manually removing the folder and then reinstalling did. Hope this helps other people too.
I'm having a similar problem, though it looks like not quite the same as either of these:
Clicking on a boss skull in an instance (or outdorr boss) produces an error message in my chatbox (no popup):
"PT3 has no table InstanceLoot.Shadow Labyrinth.Murmur", or the equivalent for whatever boss I try.
This problem has persisted for a while now, only on my Windows machine. When running on my Mac after copying over the mods, the loot lists load without error. I tried moving my WTF folder without effect, and I've reinstalled parts or all of Cartographer. Any ideas?