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    Take a look at this blog post on how to set up Grid2 A user related (in the email group on the source) that using older selenium libs solves this exception.

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via GitHub by xXLightAngelXx
, 1 year ago
Unexpected error
via GitHub by Niduin
, 2 years ago
Unexpected error
via GitHub by prodkid
, 2 years ago
Unexpected error
java.lang.NullPointerException: Unexpected error	at	at net.minecraftforge.common.UsernameCache.getLastKnownUsername(	at crazypants.enderio.teleport.anchor.BlockTravelAnchor.sendPrivateChatMessage(	at crazypants.enderio.teleport.telepad.BlockTelePad.openGui(	at crazypants.enderio.teleport.telepad.BlockTelePad.openGui(	at com.enderio.core.common.BlockEnder.func_149727_a(	at crazypants.enderio.BlockEio.func_149727_a(	at net.minecraft.client.multiplayer.PlayerControllerMP.func_78760_a(	at net.minecraft.client.Minecraft.func_147121_ag(	at net.minecraft.client.Minecraft.func_71407_l(	at net.minecraft.client.Minecraft.func_71411_J(	at net.minecraft.client.Minecraft.func_99999_d(	at net.minecraft.client.main.Main.main(SourceFile:148)	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(	at net.minecraft.launchwrapper.Launch.main(