here is the crash report, thanks using build 359
JB567
2013-06-23 19:14:25 [INFO] [STDOUT] Loaded net.bdew.neiaddons.NEIAddonsConfig
2013-06-23 19:14:26 [INFO] [STDOUT] Loaded mods.neiplugins.NEIPluginsConfig
2013-06-23 19:14:26 [INFO] [GraviGun] [1.5.1] Received world props from server.
2013-06-23 19:14:26 [INFO] [PortalGun] [1.5.2] Received world props from server.
2013-06-23 19:14:27 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 11182 to go!
2013-06-23 19:14:27 [INFO] [Minecraft-Server] Saving and pausing game...
2013-06-23 19:14:27 [INFO] [Minecraft-Server] Saving chunks for level 'New World'/Overworld
2013-06-23 19:14:28 [INFO] [Minecraft-Client] [CHAT] §1[Mekanism] §7Using developer build §85.5.6
2013-06-23 19:14:35 [INFO] [Minecraft-Server] Saving chunks for level 'New World'/Nether
2013-06-23 19:14:35 [WARNING] [Minecraft-Server] Can't keep up! Did the system time change, or is the server overloaded?
2013-06-23 19:14:44 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 9939 to go!
2013-06-23 19:14:44 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 7926 to go!
2013-06-23 19:14:45 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 5625 to go!
2013-06-23 19:14:45 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 3211 to go!
2013-06-23 19:14:45 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 710 to go!
2013-06-23 19:14:51 [INFO] [Minecraft-Client] [CHAT] [MagicBees] A new version is available: 2.0.2
2013-06-23 19:14:51 [INFO] [Minecraft-Client] [CHAT] Fixed a crash on Escritoire mutation notes that required a Thaumcraft Node. (Forestry 2.2.8.x)
2013-06-23 19:14:52 [INFO] [STDOUT] Inserted super call into ayy.c
2013-06-23 19:14:53 [INFO] [STDOUT] ComputerCraft: Searching for RedPowerWorld...
2013-06-23 19:14:53 [INFO] [STDOUT] ComputerCraft: RedPowerWorld not found.
2013-06-23 19:14:53 [INFO] [STDERR] Exception in thread "NEI Item Loading Thread" java.lang.RuntimeException: java.lang.ClassNotFoundException: ic2.core.item.ElectricItem
2013-06-23 19:14:53 [INFO] [STDERR] at ic2.api.ElectricItem.charge(ElectricItem.java:31)
2013-06-23 19:14:53 [INFO] [STDERR] at shedar.mods.ic2.nuclearcontrol.items.ItemToolDigitalThermometer.func_77633_a(ItemToolDigitalThermometer.java:104)
2013-06-23 19:14:53 [INFO] [STDERR] at codechicken.nei.ItemList$ThreadLoadItems.run(ItemList.java:305)
2013-06-23 19:14:53 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: ic2.core.item.ElectricItem
2013-06-23 19:14:53 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
2013-06-23 19:14:53 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-06-23 19:14:53 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-06-23 19:14:53 [INFO] [STDERR] at java.lang.Class.forName0(Native Method)
2013-06-23 19:14:53 [INFO] [STDERR] at java.lang.Class.forName(Unknown Source)
2013-06-23 19:14:53 [INFO] [STDERR] at ic2.api.ElectricItem.charge(ElectricItem.java:27)
2013-06-23 19:14:53 [INFO] [STDERR] ... 2 more
2013-06-23 19:14:53 [INFO] [STDERR] Caused by: java.lang.NullPointerException
2013-06-23 19:14:54 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 162 to go!
2013-06-23 19:16:05 [WARNING] [Minecraft-Server] Can't keep up! Did the system time change, or is the server overloaded?
2013-06-23 19:17:16 [INFO] [Minecraft-Server] Saving and pausing game...
2013-06-23 19:17:16 [INFO] [Minecraft-Server] Saving chunks for level 'New World'/Overworld
2013-06-23 19:17:24 [INFO] [Minecraft-Server] Saving chunks for level 'New World'/Nether
2013-06-23 19:18:42 [WARNING] [Minecraft-Server] Can't keep up! Did the system time change, or is the server overloaded?
2013-06-23 19:20:31 [INFO] [Minecraft-Server] Stopping server
2013-06-23 19:20:31 [INFO] [Minecraft-Server] Saving players
2013-06-23 19:20:31 [INFO] [STDOUT] Unloading Player: JB567
2013-06-23 19:20:31 [INFO] [Minecraft-Server] Saving worlds
2013-06-23 19:20:31 [INFO] [Minecraft-Server] Saving chunks for level 'New World'/Overworld
2013-06-23 19:20:31 [INFO] [Minecraft-Server] Saving chunks for level 'New World'/Nether
2013-06-23 19:20:31 [INFO] [ForgeModLoader] [Thaumcraft] Removed 48 aura nodes when world 0 unloaded.
2013-06-23 19:20:32 [INFO] [ForgeModLoader] [Thaumcraft] Removed 0 aura nodes when world -1 unloaded.
2013-06-23 19:20:32 [INFO] [ForgeModLoader] Unloading dimension 0
2013-06-23 19:20:32 [INFO] [ForgeModLoader] Unloading dimension -1
2013-06-23 19:20:34 [INFO] [STDERR] net.minecraft.util.ReportedException: Updating screen events
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1507)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:835)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:760)
2013-06-23 19:20:34 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)
2013-06-23 19:20:34 [INFO] [STDERR] Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: ic2.core.item.ElectricItem
2013-06-23 19:20:34 [INFO] [STDERR] at ic2.api.ElectricItem.charge(ElectricItem.java:31)
2013-06-23 19:20:34 [INFO] [STDERR] at shedar.mods.ic2.nuclearcontrol.items.ItemToolDigitalThermometer.func_77633_a(ItemToolDigitalThermometer.java:104)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.gui.inventory.GuiContainerCreative.func_74228_j(GuiContainerCreative.java:360)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.gui.inventory.GuiContainerCreative.func_74227_b(GuiContainerCreative.java:570)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73879_b(GuiContainerCreative.java:471)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.gui.GuiScreen.func_73867_d(SourceFile:131)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.gui.inventory.GuiContainer.func_73867_d(GuiContainer.java:989)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73867_d(GuiContainerCreative.java:589)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.gui.GuiScreen.func_73862_m(SourceFile:111)
2013-06-23 19:20:34 [INFO] [STDERR] at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1500)
2013-06-23 19:20:34 [INFO] [STDERR] ... 3 more
2013-06-23 19:20:34 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: ic2.core.item.ElectricItem
2013-06-23 19:20:34 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:139)
2013-06-23 19:20:34 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-06-23 19:20:34 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-06-23 19:20:34 [INFO] [STDERR] at java.lang.Class.forName0(Native Method)
2013-06-23 19:20:34 [INFO] [STDERR] at java.lang.Class.forName(Unknown Source)
2013-06-23 19:20:34 [INFO] [STDERR] at ic2.api.ElectricItem.charge(ElectricItem.java:27)
2013-06-23 19:20:34 [INFO] [STDERR] ... 12 more
2013-06-23 19:20:44 [INFO] [Minecraft-Client] Stopping!
2013-06-23 19:20:44 [INFO] [STDOUT]
2013-06-23 19:20:44 [INFO] [STDOUT] SoundSystem shutting down...
2013-06-23 19:20:44 [INFO] [STDOUT] Author: Paul Lamb, www.paulscode.com