The mod Map tag core (0.1.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event map-tag-core::on_gui_click (ID 1)
map-tag-core/control.lua:150: attempt to index field 'mtc_ctrl-click-behavior' (a nil value)
stack traceback:
map-tag-core/control.lua:150: in function <map-tag-core/control.lua:130>

Hi there,

Thanks for reporting the issue. Can you describe the steps you took that generated this error? Also, are you using this in combination with Map tag GPS?

1) initially was not using in combination with Map tag GPS, but there are about 20ish other mods installed. Have been testing a few of my own mod ideas alongside the Janky mods (2.0 simulation) to see if some ideas i have are possible candidates for the upcoming expansion.
2) used hotkey to grab map-tag tool, clicked on a tag on the map (also tried clicking on a tag that appeared in the popup window when holding the tool)
3) game issued error and crashed to main menu.

...have since added Map Tag GPS and am now able to teleport to map tags as intended. Appears that the teleport mod requires map tag GPS, or if map tag GPS is not enabled, there is another mod that is causing problems.

1) created fresh world with only vanilla + the 3 mods in your suite (the core, gps mod, and teleport mod), no other mods included.
2) teleporting works fine.
3) removed GPS mod and generated new world with only the core mod and the teleport mod.
4) crash occurs in new vanilla map with only the two mods when trying to teleport.
4b) crashes occur if clicking the map anywhere there's not a tag, or if clicking a tag in the popup menu that appears when holding the tool, or clicking a tag in the map preview with the tool

---conclusion: map tag teleport requires map tag GPS.

This was caused by checking settings based on the two mods, which are not present when only one of the two is used.
Is fixed in the latest version.