at net.minecraft.server.v1_4_6.ServerConnection.b(SourceFile:39)
        at net.minecraft.server.v1_4_6.DedicatedServerConnection.b(SourceFile:30)
        at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:598)
        at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
        at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
        at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
        at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NullPointerException
        at eu.wServers.messageofdeath.PaidRanks.PaidRanks.isInGroupList(PaidRanks.java:176)
        at eu.wServers.messageofdeath.PaidRanks.PaidRanks.rankUp(PaidRanks.java:196)
        at eu.wServers.messageofdeath.PaidRanks.PaidRanks.onCommand(PaidRanks.java:119)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
        ... 15 more
>