hello i'm having a problem me and some friends play on a tekkit classic server currently 3.1.2. well i was thinking of upgrading it to the 3.1.3 update. but before i did that i was going to see what mods 3.1.3 has and which ones changed and if there are any news ones (just to see what would be deleted from our world in 3.1.2) well i updated my launcher from 3.1.2 to 3.1.3 and i clicked launched. it loaded up. ( FML did not load) and it got to the "mojang" screen then crashed with this error message:
43 mods loaded
Optifine OptiFine_1.2.5_HD_S_C6
Minecraft Forge 3.3.8.164
FML v2.2.106.176
Forge Mod Loader version 2.2.106.176 for Minecraft 1.2.5
mod_MinecraftForge : Initialized (modpack.jar)
mod_CodeChickenCore : Initialized (modpack.jar)
mod_NotEnoughItems : Initialized (modpack.jar)
mod_ReiMinimap : Initialized ([1.2.5]ReiMinimap_v3.2_04.zip)
mod_IC2AdvancedMachines : Initialized (AdvancedMachines_4.0_client.zip)
mod_BuildCraftCore : Initialized (buildcraft-client-A-core-2.2.14.zip)
mod_BuildCraftBuilders : Initialized (buildcraft-client-B-builders-2.2.14.zip)
mod_BuildCraftEnergy : Initialized (buildcraft-client-B-energy-2.2.14.zip)
mod_BuildCraftFactory : Initialized (buildcraft-client-B-factory-2.2.14.zip)
mod_BuildCraftTransport : Initialized (buildcraft-client-B-transport-2.2.14.zip)
mod_AdditionalPipes : Initialized (buildcraft-client-DA-additionalpipes-2.1.3.zip)
mod_ccSensors : Initialized (ccSensors-client-MC125-B017pr1.zip)
mod_CCTurtle : Initialized (ComputerCraft)
mod_ComputerCraft : Initialized (ComputerCraft)
mod_CCTurtle : Loaded (ComputerCraft1.41.zip)
mod_ComputerCraft : Loaded (ComputerCraft1.41.zip)
mod_EE : Loaded (EE2ClientV1.4.6.5.jar)
mod_EnderStorage : Loaded (EnderStorage-Client 1.1.3.zip)
mod_IC2NuclearControl : Loaded (IC2NuclearControl_client_v1.1.10b.zip)
mod_ImmibisCore : Loaded (immibis-core_49.1.1_for_1.2.5-client.jar)
mod_IC2 : Loaded (industrialcraft-2-client_1.103.jar)
mod_InvTweaks : Loaded (InvTweaks-1.41b-1.2.4.zip)
mod_MAtmos_forModLoader : Loaded (MAtmos_packaged.zip)
mod_ModularForceFieldSystem : Loaded (mffs_rev7_for_1.2.5-client.zip)
mod_IC2_ChargingBench : Loaded (mod_chargingbench-client-1.95b-1.2.5-r1.zip)
mod_CompactSolars : Loaded (mod_compactsolars-client-2.3.2.10.zip)
mod_IronChest : Loaded (mod_ironchests-client-3.8.0.40.zip)
mod_NetherOres : Loaded (NetherOres_Client_1.2.1.zip)
mod_PowerConverters : Loaded (PowerConverters_Client_1.3.4.zip)
mod_Railcraft : Loaded (Railcraft_Client_5.4.7b.zip)
mod_RedPowerControl : Loaded (RedPowerControl-2.0pr5b2.zip)
mod_RedPowerCore : Loaded (RedPowerCore-2.0pr5b2.zip)
mod_RedPowerLighting : Loaded (RedPowerLighting-2.0pr5b2.zip)
mod_RedPowerLogic : Loaded (RedPowerLogic-2.0pr5b2.zip)
mod_RedPowerMachine : Loaded (RedPowerMachine-2.0pr5b2.zip)
mod_RedPowerWiring : Loaded (RedPowerWiring-2.0pr5b2.zip)
mod_RedPowerWorld : Loaded (RedPowerWorld-2.0pr5b2.zip)
mod_TubeStuff : Loaded (tubestuff_49.1.2_for_1.2.5-client.jar)
mod_WeaponMod : Loaded (WeaponMod.zip)
mod_WirelessRedstoneAddons : Loaded (WR-CBE Addons-Client 1.2.2.3.zip)
mod_WirelessRedstoneCore : Loaded (WR-CBE Core-Client 1.2.2.3.zip)
mod_WirelessRedstoneRedPower : Loaded (WR-CBE RedPower-Client 1.2.2.1.zip)
mod_ImmiChunkLoaders : Loaded (zdimensional-anchor_rev3.2_for_1.2.5-client.jar)
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem.
--- BEGIN ERROR REPORT 7dfb87b2 --------
Generated 5/18/13 5:00 AM
Minecraft: Minecraft 1.2.5
OS: Windows 7 (x86) version 6.1
Java: 1.7.0_21, Oracle Corporation
VM: Java HotSpot Client VM (mixed mode), Oracle Corporation
LWJGL: 2.4.2
OpenGL: AMD Radeon HD 6310 Graphics version 4.1.10834 Compatibility Profile Context, ATI Technologies Inc.
java.lang.NullPointerException
at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:356)
at cpw.mods.fml.common.Loader.modInit(Loader.java:273)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:628)
at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:223)
at net.minecraft.client.Minecraft.a(Minecraft.java:429)
at net.minecraft.client.Minecraft.run(Minecraft.java:738)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 695b02b ----------
what can i do to fix this? thanks!!