I've attached a screenshot of the error, and of my mods folder. This also happens when I use the previous version of the CodeChickenLib. Maybe this is the wrong place to post this - if so, please let me know.

Yeah, so, CodeChickenLib and CodeChickenCore arent the same thing, in 1.11 CCC is dead, but in 1.10 you need both.

Oh, my bad. I just downloaded what was linked via the Curse page. I'll go download the proper thing, then. Thanks for pointing me in the right direction, really appreciate it!