Pixelmon 3.0 Crash Help

I have recently tried to install pixelmon on my server but everytime I get this:
---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 2/16/14 12:59 PM
Description: Exception in server tick loop

cpw.mods.fml.common.DuplicateModsFoundException
at cpw.mods.fml.common.Loader.identifyDuplicates(Loader.java:396)
at cpw.mods.fml.common.Loader.identifyMods(Loader.java:354)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:484)
at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99)
at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:92)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:618)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Linux (amd64) version 3.8.0-29-generic
Java Version: 1.7.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1422519440 bytes (1356 MB) / 1556938752 bytes (1484 MB) up to 1556938752 bytes (1484 MB)
JVM Flags: 11 total; -Xmx1536M -Xms1536M -Xss2M -XX:PermSize=50m -XX:MaxPermSize=150m -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSIncrementalMode -XX:+CMSIncrementalPacing -XX:+CMSParallelRemarkEnabled -XX:MaxGCPauseMillis=50
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
CraftBukkit Information:
Running:
Failed to handle CraftCrashReport:
java.lang.NullPointerException
at org.bukkit.Bukkit.getName(Bukkit.java:72)
at org.bukkit.craftbukkit.v1_6_R3.CraftCrashReport.call(CraftCrashReport.java:19)
at net.minecraft.crash.CrashReportCategory.func_71500_a(CrashReportCategory.java:106)
at net.minecraft.crash.CrashReport.func_71504_g(CrashReport.java:58)
at net.minecraft.crash.CrashReport.<init>(CrashReport.java:40)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:677)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

FML: MCP v8.11 FML v6.4.30.933 Minecraft Forge 9.11.1.935 5 mods loaded, 0 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar)
FML{6.4.30.933} [Forge Mod Loader] (pixelmon3.0.0.jar)
Forge{9.11.1.935} [Minecraft Forge] (pixelmon3.0.0.jar)
pixelmon{2.5.7} [Pixelmon] (Pixelmon 2.5.7.zip)
pixelmon{3.0.0} [Pixelmon] (Pixelmon 3.0.0.zip)
Profiler Position: N/A (disabled)
Is Modded: Definitely; Server brand changed to 'mcpc,craftbukkit,fml,forge'
Type: Dedicated Server (map_server.txt)
Heres a picture of how I install it tell me if I have to do it manually please! (and how to do it if i have to or a tutorial link much appreiciated!) Thank you for any help you can give and thank you for your time!