Unleashed server crash

[ye_Craft]

my server just crash on startup after a server restart, i change nothing.
the server is running on mcpc+, but i change it back to forge, it still crashed.
at first, other players cant join, says http respone 503, but the online players can still play.
then i restart, it crashed, after times of restarts, sometime it doesnt crash, but no one can join.

this is the crash report. Need help

http://pastebin.com/ydXD23uQ

 

[cloudbyday90]

You need the scala-lib.jar http://files.minecraftforge.net/fmllibs/scala-library.jar

linky for your convience

 

[ye_Craft]

You need the scala-lib.jar http://files.minecraftforge.net/fmllibs/scala-library.jar

linky for your convience

what is that?

 

[cloudbyday90]

Uhhhh..a dependency that Forge Multipart requires. I'm not finding it in the list of mods that you have installed.

 

[ye_Craft]

Uhhhh..a dependency that Forge Multipart requires. I'm not finding it in the list of mods that you have installed.

i am using FTB unleashed pack download from the official website, it should have everything it needs