The Commerce > Welcome > Unload All hotkey is set to iup.K_U, when it should be iup.K_u. All the other hotkeys are lower case no matter the case of the letter on the button title.

Speaking of which, you have iup.K_u as the hotkey for the "Nearby Ships" button on the Sensor Log tab when really nobody can know that since the character doesn't even appear in the title. Not a bug I guess so not worth a separate thread but it's really not ideal so I'm pointing it out.