I log on to minecraft after i install forge and other mods and i load up my world BAM this happens

 

 

Mods loaded: 6

ModLoader 1.2.5

mod_MinecraftForge 3.1.3.107

mod_TooManyItems 1.2.5 2012-04-13

mod_ModLoaderMp 1.2.5v1

mod_MCA Minecraft Comes Alive v2.0

mod_ExplosivesPlus Explosives+ v3.3 by Pheenixm

 

      Minecraft has crashed!     

      ----------------------     

 

Minecraft has stopped running because it encountered a problem.

 

 

 

 

--- BEGIN ERROR REPORT 5f40c5d6 --------

Generated 5/29/12 7:32 AM

 

Minecraft: Minecraft 1.2.5

OS: Windows 7 (x86) version 6.1

Java: 1.6.0_31, Sun Microsystems Inc.

VM: Java HotSpot Client VM (mixed mode), Sun Microsystems Inc.

LWJGL: 2.4.2

OpenGL: AMD Radeon HD 6900 Series version 4.2.11631 Compatibility Profile Context, ATI Technologies Inc.

 

java.lang.NoSuchMethodError: alb.getSaveFolder()Ljava/lang/String;

at aia.a(AnvilSaveHandler.java:21)

at .d(World.java:362)

at .<init>(World.java:345)

at .<init>(World.java:277)

at net.minecraft.client.Minecraft.a(Minecraft.java:1930)

at mw.c(SourceFile:171)

at iz.a(SourceFile:220)

at if.a(SourceFile:150)

at mw.a(SourceFile:192)

at lr.b(EntityRenderer.java:972)

at EntityRendererProxy.b(EntityRendererProxy.java:21)

at net.minecraft.client.Minecraft.x(Minecraft.java:869)

at net.minecraft.client.Minecraft.run(Minecraft.java:747)

at java.lang.Thread.run(Unknown Source)

--- END ERROR REPORT 6cea27fb ----------

 

it says something about my saves idk but plz help!

You did not install forge fully, or you installed something that overrode the alb class.

Find out which.

I also *randomly* get that same error when MC is loaded using a non-standard classloader (in my case, Eclipse).  At which point just reloading it another 1 or 5 times gets it working, has to do with the order that the classes are loaded.  If you are using a non-standard launcher then that could be the reason.