Windows .exe Black Screen after MC logo screen when Mo'Creatures installed

[sycoinc]

I have installed Mo'Creatures to my FTB client along with my server, the server works fine and starts up and says it is live. When i try to connect to it without the Mo'Creatures mod it lets me know i need to install the mods in my client.

I do so with the correct 1.4.7 mods (the same ones i used on my server) and get the error below.

Looking at YouYube videos on how to install Mo'Creatures and following their steps, it seems this is a different Error than people normally get (the one where you have to change the id of some blocks that conflict)

I am using the Yogcraft Pack also for Server and Launcher Use. Any help will be great!

2013-06-13 19:31:03 [INFO] [STDERR] Exception in thread "Minecraft main thread" java.lang.NoClassDefFoundError: WidgetInt
2013-06-13 19:31:03 [INFO] [STDERR] at java.lang.Class.forName0(Native Method)
2013-06-13 19:31:03 [INFO] [STDERR] at java.lang.Class.forName(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:52)
2013-06-13 19:31:03 [INFO] [STDERR] at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:464)
2013-06-13 19:31:03 [INFO] [STDERR] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-06-13 19:31:03 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:153)
2013-06-13 19:31:03 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-06-13 19:31:03 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2013-06-13 19:31:03 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2013-06-13 19:31:03 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:86)
2013-06-13 19:31:03 [INFO] [STDERR] at cpw.mods.fml.common.Loader.loadMods(Loader.java:494)
2013-06-13 19:31:03 [INFO] [STDERR] at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:161)
2013-06-13 19:31:03 [INFO] [STDERR] at net.minecraft.client.Minecraft.a(Minecraft.java:412)
2013-06-13 19:31:03 [INFO] [STDERR] at asq.a(SourceFile:56)
2013-06-13 19:31:03 [INFO] [STDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:746)
2013-06-13 19:31:03 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: WidgetInt
2013-06-13 19:31:03 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185)
2013-06-13 19:31:03 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-06-13 19:31:03 [INFO] [STDERR] ... 29 more
2013-06-13 19:31:03 [INFO] [STDERR] Caused by: java.lang.NullPointerException

 

[11philip22]

do you have the crash log?

 

[sycoinc]

the error is above in the initial post, other than that that's all that was wrong in the FTB launcher console so i had to force exit it due to the black screen.

 

[lavarthan]

Make sure you also have GUI Api and CustomMobSpawner installed as well.

 

[sycoinc]

yeah all 3 mods installed in it the custom mob spawner and mo'creatures in the mods section and the guiapi in the jar section