Forge moded Minecraft server error

So I start my server with forge and ferullos gun mod installed but then when I try to log in it says Internal server error. Here is the log:

13.08 00:12:35 [Multicraft] Skipped 6 lines due to rate limit (30/s)
13.08 00:12:33 [Minecraft-Server] Mjone77 ran command Message of the Day
13.08 00:12:33 [Server] INFO at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(SourceFile:29)
13.08 00:12:33 [Server] INFO at net.minecraft.server.ServerListenThread.func_71766_a(ServerListenThread.java:55)
13.08 00:12:33 [Server] INFO at net.minecraft.network.NetLoginHandler.func_72532_c(NetLoginHandler.java:71)
13.08 00:12:33 [Server] INFO at net.minecraft.network.NetLoginHandler.func_72529_d(NetLoginHandler.java:178)
13.08 00:12:33 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:120)
13.08 00:12:33 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:166)
13.08 00:12:33 [Server] INFO at net.minecraft.network.NetLoginHandler.completeConnection(NetLoginHandler.java:194)
13.08 00:12:33 [Server] INFO at net.minecraft.server.management.ServerConfigurationManager.func_72355_a(ServerConfigurationManager.java:125)
13.08 00:12:33 [Server] INFO java.lang.NullPointerException
13.08 00:12:33 [Server] WARNING [Minecraft-Server] Failed to handle packet for Mjone77 [/(my ip)]: java.lang.NullPointerException
13.08 00:12:33 [Server] INFO at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:582)
13.08 00:12:33 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
13.08 00:12:33 [Server] INFO at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:585)
13.08 00:12:33 [Server] INFO at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:275)
13.08 00:12:33 [Server] INFO at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:689)
13.08 00:12:33 [Server] INFO at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(SourceFile:29)
13.08 00:12:33 [Server] INFO at net.minecraft.server.ServerListenThread.func_71766_a(ServerListenThread.java:55)
13.08 00:12:33 [Server] INFO at net.minecraft.network.NetLoginHandler.func_72532_c(NetLoginHandler.java:71)
13.08 00:12:33 [Server] INFO at net.minecraft.network.NetLoginHandler.func_72529_d(NetLoginHandler.java:178)
13.08 00:12:33 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:120)
13.08 00:12:33 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:166)
13.08 00:12:33 [Server] INFO at net.minecraft.network.NetLoginHandler.completeConnection(NetLoginHandler.java:194)
13.08 00:12:33 [Server] INFO at net.minecraft.server.management.ServerConfigurationManager.func_72355_a(ServerConfigurationManager.java:125)
13.08 00:12:33 [Server] INFO java.lang.NullPointerException
13.08 00:12:33 [Server] SEVERE Error handling login related packet - connection from Mjone77 [/(my ip)] refused
13.08 00:12:33 [Server] INFO [Minecraft-Server] Disconnecting Mjone77 [/99.110.20.206:55949]: Internal server error
13.08 00:12:33 [Server] INFO Cannot Hotload Dim: Could not get provider type for dimension 13, does not exist
13.08 00:12:33 [Connect] User [Minecraft-Server] Mjone77, IP (my ip)
13.08 00:12:33 [Server] INFO Cannot Hotload Dim: Could not get provider type for dimension 13, does not exist
13.08 00:12:33 [Server] INFO User Mjone77 connecting with mods [FerullosMods, Forge]
13.08 00:12:29 [Server] SEVERE [Minec

I just want to mod it to play with guns with my friends when nobody else is on, otherwise my server is usually a regular bukkit one.