The game crashes if foam fix is present.

Description: Initializing game

java.lang.NoSuchFieldError: firstLoad
at net.minecraftforge.client.model.ModelLoader.func_177570_a(ModelLoader.java:61)
at net.minecraft.client.renderer.block.model.ModelManager.func_110549_a(ModelManager.java:28)
at net.minecraft.client.resources.SimpleReloadableResourceManager.func_110542_a(SimpleReloadableResourceManager.java:122)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:499)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:351)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Please update Forge.

Why does LoamFix not use the recommended version?

Because the latest version usually has many more bugfixes and additional features which some mods rely on, and modpacks seem to generally also use the latest version?

Alright! I will update!