Issue Description:

The issue isn't with your mod, it runs fine with 359 other mods I'm playing around with.

The issue is with the mod Roboticraft (https://minecraft.curseforge.com/projects/roboticraft) and IronBackpacks, but it's getting a nearly identical NPE with WearableBackpacks, as well.

What happens:

Modified instance to just 3 mods, for this crash-report

https://pastebin.com/1iTYSp3d

java.lang.NullPointerException: Initializing game
at gr8pefish.ironbackpacks.item.ItemUpgrade.func_77667_c(ItemUpgrade.java:36)

What you expected to happen:

IronBackpacks code causing NPE, only with Roboticraft installed.

@Override
public String getUnlocalizedName(ItemStack stack) {
    BackpackUpgrade backpackUpgrade = getUpgrade(stack);
    if (backpackUpgrade.isNull())
        return super.getUnlocalizedName(stack);

    return "upgrade.ironbackpacks." + backpackUpgrade.getIdentifier().getResourcePath();
}

WearableBackpacks code causing NPE, only with Roboticraft Installed.

@Override
public String getUnlocalizedName() {
	// Just use the item's unlocalized name for this block.
	return MiscUtils.getItemFromBlock(this).getUnlocalizedName();

}

It would seem, that the .getUnlocalizedNamed() is the commonality?

Affected Versions (Do not use "latest"):

• MultiMC 5: 0.6.20-1222
• Forge: 14.23.4.2703
• Minecraft: 1.12.2
• IronBackpacks: 1.12.2-3.0.8-12
• Rabbit-GUI (required for Roboticraft): 1.12.2
• Roboticraft: 0.10.3

Thank you!

I have also posted this on the WearableBackpacks Git issues, where the Roboticraft author had started the issue.

copygirl/WearableBackpacks#80

#237 he is calling that shit way too early.

Ya, I should have searched deeper before posting, only after I saw the previous ones.

My bad.