Minecraft version: 1.12.2
Forge version: 14.23.5.2795
Foamfix: 1.10.2 & 1.10.3
Optifine: HD U E2

Minecraft crashes whenever I attempt to run Optifine with foamfix 1.10.3 and 1.10.2.

Log for Foamfix 1.10.2:
2018-12-04-7.log

Log for Foamfix 1.10.3:
2018-12-04-6.log

Ignore this! It wasn't a problem with foamfix but a problem with forge!

Incorrect! 😲

That's a problem with OptiFine not being able to figure out how to patch the most recent version of Forge!