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[1.12.2] Just released `CraftTweaker2-1.12-4.1.20.664.jar` immedeately crashing on startup

See original GitHub issue

Issue description

While prepping a release for my modpack Rotten Economy I updated to the just released 1.12.2 version CraftTweaker2-1.12-4.1.20.664.jar and could no longer start minecraft as it crashes almost immediately with a stack trace pointing towards CraftTweaker.

Stack Trace Snippet

The full trace is in the attached gist link but here is a quick peek:

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from CraftTweaker2 (crafttweaker)
 Caused by: java.lang.ExceptionInInitializerError
     at crafttweaker.CrafttweakerImplementationAPI.init(CrafttweakerImplementationAPI.java:72)
     at crafttweaker.mc1120.CraftTweaker.onConstruction(CraftTweaker.java:110)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
 Caused by: java.lang.RuntimeException: already has a getter
     at stanhebben.zenscript.type.natives.ZenNativeMember.setGetter(ZenNativeMember.java:34)
     at stanhebben.zenscript.type.ZenTypeNative.complete(ZenTypeNative.java:142)
     at stanhebben.zenscript.compiler.TypeRegistry.getClassType(TypeRegistry.java:52)
     at stanhebben.zenscript.compiler.TypeRegistry.getType(TypeRegistry.java:77)
     at stanhebben.zenscript.type.natives.JavaMethod.<init>(JavaMethod.java:37)

Versions

md5sum	filename	name
`71c750eb05c4cdcd78d9ed30ac0f8a51`	`CraftTweaker2-1.12-4.1.20.664.jar`	“new”, “just released”, “crashing”
`917948d6b8210b226744372f6f61922c`	`CraftTweaker2-1.12-4.1.20.663.jar`	“old”, “previous”, “works good”