java.lang.NullPointerException: Unexpected error at com.progwml6.natura.shared.block.clouds.BlockCloud.func_180639_a(BlockCloud.java:70) at net.minecraft.client.multiplayer.PlayerControllerMP.func_187099_a(PlayerControllerMP.java:410) at PlayerControllerOF.func_187099_a(PlayerControllerOF.java:88) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1518) at net.minecraft.client.Minecraft.func_184117_aA(Minecraft.java:2184) at net.minecraft.client.Minecraft.func_184118_az(Minecraft.java:1961) at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1749) at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1055) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:371) 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)

-- Head -- Thread: Client thread Stacktrace: at com.progwml6.natura.shared.block.clouds.BlockCloud.func_180639_a(BlockCloud.java:70) at net.minecraft.client.multiplayer.PlayerControllerMP.func_187099_a(PlayerControllerMP.java:410) at PlayerControllerOF.func_187099_a(PlayerControllerOF.java:88) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1518) at net.minecraft.client.Minecraft.func_184117_aA(Minecraft.java:2184) at net.minecraft.client.Minecraft.func_184118_az(Minecraft.java:1961)

Came here to post exactly this issue. I'm running the most recent Sky Factory 3, and can replicate this crash every time. Server runs fine, but the client crashes to desktop.

My friend crashes 4 times because of it so we eventually removed the cloud in our home

What version of minecraft are you running?