Can you get a log?
What version of forge did you use?
22.11 19:04:09 [Server] INFO [STDERR]... 4 more
22.11 19:04:09 [Server] INFO [STDERR]at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:260)
22.11 19:04:09 [Server] INFO [STDERR]at codechicken.core.asm.CodeChickenCorePlugin.call(CodeChickenCorePlugin.java:1)
22.11 19:04:09 [Server] INFO [STDERR]at codechicken.core.asm.CodeChickenCorePlugin.call(CodeChickenCorePlugin.java:60)
22.11 19:04:09 [Server] INFO [STDERR]at codechicken.core.asm.CodeChickenCorePlugin.scanCodeChickenMods(CodeChickenCorePlugin.java:67)
22.11 19:04:09 [Server] INFO [STDERR] Caused by: java.lang.NullPointerException
22.11 19:04:09 [Server] INFO [STDERR]... 3 more
22.11 19:04:09 [Server] INFO [STDERR]at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
22.11 19:04:09 [Server] INFO [STDERR]at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:264)
22.11 19:04:09 [Server] INFO [STDERR] Caused by: java.lang.RuntimeException: java.lang.NullPointerException
22.11 19:04:09 [Server] INFO [STDERR]at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1347)
22.11 19:04:09 [Server] INFO [STDERR]at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:33)
22.11 19:04:09 [Server] INFO [STDERR]at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:133)
22.11 19:04:09 [Server] INFO [STDERR]at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)
22.11 19:04:09 [Server] INFO [STDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException
22.11 19:04:09 [Server] INFO [STDOUT] Adding Accesstransformer map: codechickencore_at.cfg
22.11 19:04:09 [Server] INFO [ForgeModLoader] Forge Mod Loader version 4.2.6.422 for Minecraft 1.4.2 loading
22.11 19:04:09 [Multicraft] Loaded config for "Minecraft (Vanilla)"
22.11 19:04:09 [Multicraft] Starting server!
22.11 19:04:09 [Multicraft] Loading server properties
22.11 19:04:09 [Multicraft] Received start command
22.11 19:04:05 [Multicraft] Loading server properties
i used the mcforge that is stable with 1.4.2 im pretty sure that correct. and thats the only log i can get. doesnt look very helpful though