Creeperhost FTB Monster pack error

[tajacama]

Every time I start my server on Creeperhost it'll start and then says the following:

01:03:35 [INFO] Starting minecraft server version 1.6.4
01:03:49 [SEVERE] Encountered an unexpected exception DuplicateModsFoundException
01:03:49 cpw.mods.fml.common.DuplicateModsFoundException
01:03:49 at cpw.mods.fml.common.Loader.identifyDuplicates(Loader.java:396)
01:03:49 at cpw.mods.fml.common.Loader.identifyMods(Loader.java:354)
01:03:49 at cpw.mods.fml.common.Loader.loadMods(Loader.java:484)
01:03:49 at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99)
01:03:49 at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)
01:03:49 at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:69)
01:03:49 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
01:03:49 at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
01:03:49 [SEVERE] This crash report has been saved to: /home/minecraft/./crash-reports/crash-2014-01-08_01.03.49-server.txt

The crash report if you're interested is here

[url]http://pastebin.com/xTwDiv5T[/URL]

I have updated the pack on the server. It has openblocks removed and added project red which is why I'm guessing the pack is updated. If it's not obvious already I have little experience with hosting a server. Thanks for the help

 

[lavarthan]

When you updated you did not remove the older mod versions. Since the mod versions are part of the file name for some mods it allowed you to copy over and did not replace the mods with a new version. You will either have to delete the mods folder and start over or go through all the mods and delete any duplicates you see until this exact error goes away.

 

[tajacama]

Thank you very much! I thought creeperhost would have deleted/replace the old mods automatically. Obviously I was wrong. Took me awhile to figure out how to delete the mods, but figured it out. Thanks again for your help!