Bataaf

Ok, found the solution so it seems: here. Removing the config files (all of them) solved the problem. Edit: This solution however only works the first time you start it up. After closing minecraft and starting it again, you have to remove the config files again to make it work. Not really a permanent solutions in my opinion. Anyone an idea?

Oh btw, I looked for similar errors on the forum and Google. Most comments seem to be aimed at having the wrong video-card drivers, an old computer or anything like that. However, all the mods work just fine on their own (Voltz, Tekkit, Vanilla), but by combining the mods it comes up with the error message above. Could it have anything to do with it running out of available memory? Thanks!

I just tried this, but unfortunately it didn't work for me. Got all the right versions and copy-replaced everything. When starting minecraft after a while of the 'Mojang screen' I get an error message. This is where it goes wrong, every other mod is started an initialized without problem. Anyone an idea how to fix this? Thanks! WR-CBE|RedPower [WR-CBE RedPower] (WR-CBE RedPower 1.3.2.4.jar) Unloaded->Constructed->Pre-initialized->Errored LWJGL: 2.4.2 OpenGL: GeForce 9600M GT/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation Is Modded: Definitely; Client brand changed to 'forge,fml' Type: Client (map_client.txt) Texture Pack: Default Profiler Position: N/A (disabled) Vec3 Pool Size: ~~ERROR~~ NullPointerException: null java.lang.NullPointerException at com.eloraam.redpower.RedPowerControl.setupBlocks(RedPowerControl.java:117) at com.eloraam.redpower.RedPowerControl.load(RedPowerControl.java:50) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:487) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69) at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300) at com.google.common.eventbus.EventBus.post(EventBus.java:268) at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:140) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69) at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300) at com.google.common.eventbus.EventBus.post(EventBus.java:268) at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:83) at cpw.mods.fml.common.Loader.initializeMods(Loader.java:657) at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:207) at net.minecraft.client.Minecraft.a(Minecraft.java:456) at asq.a(SourceFile:56) at net.minecraft.client.Minecraft.run(Minecraft.java:744) at java.lang.Thread.run(Unknown Source) --- END ERROR REPORT fb37a8e1 ----------