crash

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

Minecraft has stopped running because it encountered a problem; ModLoader has failed to initialize.
This error has been saved to C:\Users\Owner\AppData\Roaming\.minecraft\crash-reports\crash-2012-08-10_20.19.54-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.



--- BEGIN ERROR REPORT bbdeb8a2 --------
Generated 8/10/12 8:19 PM

- Minecraft Version: 1.3.1
- Operating System: Windows 7 (x86) version 6.1
- Java Version: 1.6.0_31, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
- Memory: 422133344 bytes (402 MB) / 518979584 bytes (494 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- ModLoader: Mods loaded: 3
ModLoader 1.3.1
mod_Arrows 1.3.1
mod_Biosphere 1.3.1


java.lang.NoSuchMethodError: py.<init>(IZ)V
	at mod_Arrows.load(mod_Arrows.java:104)
	at ModLoader.init(ModLoader.java:922)
	at ModLoader.addAllRenderers(ModLoader.java:169)
	at avx.<init>(RenderManager.java:86)
	at avx.<clinit>(RenderManager.java:12)
	at net.minecraft.client.Minecraft.a(SourceFile:260)
	at net.minecraft.client.Minecraft.run(SourceFile:516)
	at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 2d338c90 ----------