For the menu on the pause screen?
I’ll have a look, assuming that is a freely accessible plugin.
Edit:
I see what the issue is. Setting up the live background reloads the map data, which causes it to temporarily become null. SRD_AltMenuScreen_KH in particular assumes that $dataMap is always available when the menu is open, which isn’t unreasonable. Hm…
There is a way to cleanly avoid the reload in theory. It’s more complicated, but it will also greatly improve how well this plugin works with forcing the menu open during battle. I’ll have to rewrite how part of the plugin works, but I’ll try to get it done soon-ish.