I've gotten this crash 4 times, randomly in the end, and I do not know why other than someone didn't check their code properly, but it has never happened before today, here's the report:
Did some research and it looks like a lingering potion area. Not sure how a fix would come around as it's a vanilla mechanic, unless it's messing with mods. -V
This is probably caused by one of the many core mods. Unfortunately there is no easy way of identifying the cause. @Xfel11 any assumptions?
Deobfuscated strack trace if anyone is interested: Code: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Boolean at net.minecraft.entity.EntityAreaEffectCloud.shouldIgnoreRadius(SourceFile:144) at net.minecraft.entity.EntityAreaEffectCloud.func_70071_h_(SourceFile:158) at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:1964) at net.minecraft.world.World.updateEntity(World.java:1934) at net.minecraft.world.World.updateEntities(World.java:1750) at net.minecraft.client.Minecraft.runTick(Minecraft.java:1789) at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1055) at net.minecraft.client.Minecraft.run(Minecraft.java:371) at net.minecraft.client.main.Main.main(SourceFile:124) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) My best guess would be an invalid value in the entity tracker, but I'm not too sure how to handle this. I don't have time to look into the source code right now.
