mod version 1.0.46
minecraft version 1.12.2

Every time i set a new keybind that isn't bound it puts a little red X and doesn't work , i make sure it's a key that isn't bound and ive tried so many keys but none of them will bind to anything and it's always a little red X, it does this for every tool on the powersuit (jetpack,glider etc)

Go to the keybinds tab on the tinker table
Click on new keybind and drag tool onto the key

It should just connect to the key and work.

Unfortunately support for the 1.12.2 development environment was dropped several years ago now and has been broken for some time partially due to changes in Java. No further updates are possible or planned at this time. If I get time and find a way to get it to work, that may change. However, current efforts are focused on moving the mod forward as new Minecraft and Forge versions are released.

This will replace the keybind gui in 1.12.2 and should be available some time next week.

Keybinds will also appear in the Controls menu and you'll finally be able to use key modifiers: