CodeChickenCore for Minecraft 1.7.10

What's the problem?

CodeChickenCore tries to download non-existing library file

Replace CodeChickenCore with unofficial version

Recommended method

GregTech New Horizons modpack developers published a patched CodeChickenCore and CodeChickenLib with some fixes. Replace your mods with CodeChickenCore Unofficial and CodeChickenLib Unofficial.

Find working CodeChickenLib

There is a corrupted CodeChickenLib mod file in the mods/1.7.10 folder. You can try to find the original version somewhere in the Web and replace it. Unfortunately, we are not able to help with that.