Can not install additional mods?!

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BurstCraftGaming

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Jul 29, 2019
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Hey guys,

So i've just only today found feed the beast which is great, and im very excited to begin, but there were a few other mods i wanted to download and use along with FTB.
Now when i launch the game the title menu says 1.4.7. So i assume i'd be downloading the 1.4.7 versions of the mods i which to use in addition.
I open the launcher, edit the modpack, and add these mods via their zip files to the pack, and then when i launch i get this error at the end:

"2013-04-11 10:38:35 [INFO] [STDERR] Exception in thread "Minecraft main thread" java.lang.NoClassDefFoundError: Ldrzhark/customspawner/CustomSpawner;
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.Class.getDeclaredFields0(Native Method)
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.Class.privateGetDeclaredFields(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.Class.getDeclaredField(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:43)
2013-04-11 10:38:35 [INFO] [STDERR] at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:464)
2013-04-11 10:38:35 [INFO] [STDERR] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-04-11 10:38:35 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:153)
2013-04-11 10:38:35 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-04-11 10:38:35 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-04-11 10:38:35 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-04-11 10:38:35 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:86)
2013-04-11 10:38:35 [INFO] [STDERR] at cpw.mods.fml.common.Loader.loadMods(Loader.java:494)
2013-04-11 10:38:35 [INFO] [STDERR] at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:161)
2013-04-11 10:38:35 [INFO] [STDERR] at net.minecraft.client.Minecraft.a(Minecraft.java:412)
2013-04-11 10:38:35 [INFO] [STDERR] at asq.a(SourceFile:56)
2013-04-11 10:38:35 [INFO] [STDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:746)
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: drzhark.customspawner.CustomSpawner
2013-04-11 10:38:35 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185)
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-11 10:38:35 [INFO] [STDERR] ... 30 more
2013-04-11 10:38:35 [INFO] [STDERR] Caused by: java.lang.NullPointerException"

Anyone have any idea on how to fix this? I'll go ahead and start playing the game now as it usually is, but if i can get help on why this is happening, i can then install the rest of the mods i wish to use.

Mods i was using:
"Better backpacks 1.4.7"
"Mo' Creatures 1.4.7"
"Better furnaces 1.4.7"
Windows 7 64 bit, 8GB ram allocated.
 
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Bickers

New Member
Jul 29, 2019
777
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you need to install both GUI API and customspawners mods alongside mo creatures for it to work next time make sure you read the mods install instructions not all mods are just 1 zip/jar
 
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BurstCraftGaming

New Member
Jul 29, 2019
2
0
0
Oh thank you for that, but i tried it just with better furnaces and the other two disabled, and i got the same error.. weird.

EDIT: After installing the GUI API (1.4.6 cause it jumps to 1.5.1?(alot of 1.4.6 mods work with 1.4.7)) and custommobspawners 1.4.7 i get this error:

2013-04-11 10:51:12 [INFO] [STDERR] Exception in thread "Minecraft main thread" java.lang.NoClassDefFoundError: de/matthiasmann/twl/Widget
2013-04-11 10:51:12 [INFO] [STDERR] at java.lang.Class.forName0(Native Method)
2013-04-11 10:51:12 [INFO] [STDERR] at java.lang.Class.forName(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:52)
2013-04-11 10:51:12 [INFO] [STDERR] at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:464)
2013-04-11 10:51:12 [INFO] [STDERR] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-04-11 10:51:12 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:153)
2013-04-11 10:51:12 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-04-11 10:51:12 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-04-11 10:51:12 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-04-11 10:51:12 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:86)
2013-04-11 10:51:12 [INFO] [STDERR] at cpw.mods.fml.common.Loader.loadMods(Loader.java:494)
2013-04-11 10:51:12 [INFO] [STDERR] at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:161)
2013-04-11 10:51:12 [INFO] [STDERR] at net.minecraft.client.Minecraft.a(Minecraft.java:412)
2013-04-11 10:51:12 [INFO] [STDERR] at asq.a(SourceFile:56)
2013-04-11 10:51:12 [INFO] [STDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:746)
2013-04-11 10:51:12 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: de.matthiasmann.twl.Widget
2013-04-11 10:51:12 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185)
2013-04-11 10:51:12 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-11 10:51:12 [INFO] [STDERR] ... 29 more
2013-04-11 10:51:12 [INFO] [STDERR] Caused by: java.lang.NullPointerException EDIT EDIT: Upon googling, it seems a problem with GUI API and mo creatures, so i guess i wont load mo creatures and the other mods it needs. I'll find something else, anywho, the other mods work fine, thanks bro :)
 
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