Minecraft Version: 1.11.2
Inventory Tweaks Version: 1.61-58
Forge Version: 1.11.2-13.20.0.2201

Okay, so when I start up the game it stops on a screen. This screen:

Meanwhile, I have the latest version of Minecraft, the latest version of Inventory Tweaks, and the latest version of Forge...

I have no idea what's wrong... Please help?

Please pay attention to what the Curse download page says the compatible versions are.

@Kobata I have. I have none of the mods Inventory Tweaks isn't compatible with, infact except for Forge I have no other mods. Meanwhile, I have the most recent version of forge, installed with the forge installer. Plus, I have the vanilla minecraft launcher. I have payed attention, and I have everything necessary, yet am still met with this issue...

So, PLEASE, can you offer me something that actually helps, instead of closing the thread and offering extremely vague advice!