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Modloader isnt working for me PLZ HELP!



Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Exception occured in ModLoader

A full error report has been saved to C:\Users\Jeff\AppData\Roaming\.minecraft\crash-reports\crash-2013-03-11_20.51.46-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash



--- BEGIN ERROR REPORT f4b9f76c --------
Full report at:
C:\Users\Jeff\AppData\Roaming\.minecraft\crash-reports\crash-2013-03-11_20.51.46-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 11/03/13 8:51 PM

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.6.0_20, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 471188632 bytes (449 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: ModLoader, EntityRendererProxy, ModTextureStatic, ...]
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
ModLoader: Mods loaded: 1
ModLoader 1.4.7


java.lang.NoClassDefFoundError: Lbspkrs/util/ModVersionChecker;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
at java.lang.Class.getDeclaredFields(Unknown Source)
at ModLoader.setupProperties(ModLoader.java:1968)
at ModLoader.addMod(ModLoader.java:370)
at ModLoader.readFromModFolder(ModLoader.java:1384)
at ModLoader.init(ModLoader.java:909)
at ModLoader.addAllRenderers(ModLoader.java:215)
at bbu.<init>(RenderManager.java:94)
at bbu.<clinit>(RenderManager.java:14)
at net.minecraft.client.Minecraft.a(SourceFile:259)
at asq.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:515)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: bspkrs.util.ModVersionChecker
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 14 more
--- END ERROR REPORT 199f427f ----------

why are you trying to use Modloader when Forge does exactly what Modloader does? Anyway, if you do want to use Modloader for some reason post this on the modloader forum