Mrrraou

That works ! Thanks very well !

Huh, MCP don't want to decompile Minecraft, also I try that you have said, reinstall Minecraft. I will say if that works.

I don't think, I can play in single player without problems. I will decompile Minecraft for look that.

I don't have any apis to install, just Forge. I don't know what is called "Minecraft Version Null", but I know my Minecraft version is 1.2.5

What do you say by "dependencies" ? I have installed Forge and all the mods need forge and that's all, but I have watched the log before create this post, and I think it's a coding error: vx.getHorizon(Lxd;)D <----- This character ??

When I try to connect to my server, Minecraft crashes Logs: 15 mods loaded Minecraft Forge 3.3.8.141 FML v2.2.106.176 Forge Mod Loader version 2.2.106.176 for Minecraft null mod_CodeChickenCore : Available (minecraft.jar) mod_MinecraftForge : Available (minecraft.jar) mod_ComputerCraft : Available (minecraft.jar) mod_CCTurtle : Available (minecraft.jar) Steve's Carts : Available (minecraft.jar) mod_ReiMinimap : Available (minecraft.jar) mod_Mystcraft : Available (minecraft.jar) mod_NotEnoughItems : Available (minecraft.jar) mod_Backpack : Available (Backpack_v2.3.5_FML_Client.zip) mod_CCPrinter : Available (CCPrinter) mod_EE : Available (EE2ClientV1.4.6.7.jar) mod_EnderStorage : Available (EnderStorage-Client 1.1.5.zip) mod_IC2 : Available (industrialcraft-2-client_1.103.jar) mod_PortalGun : Available (portalgun) mod_ThaumCraft : Available (minecraft.jar) Minecraft has crashed! ---------------------- Minecraft has stopped running because it encountered a problem. --- BEGIN ERROR REPORT c752dcf8 -------- Generated 09/09/12 10:41 Minecraft: Minecraft 1.2.5 OS: Windows XP (x86) version 5.1 Java: 1.6.0_35, Sun Microsystems Inc. VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc. LWJGL: 2.4.2 OpenGL: ATI Radeon HD 3450 version 3.3.9901 Compatibility Profile Context, ATI Technologies Inc. java.lang.NoSuchMethodError: vx.getHorizon(Lxd;)D at alb.getHorizon(WorldProvider.java:241) at .I(World.java:4249) at l.a(RenderGlobal.java:1044) at lr.a(EntityRenderer.java:1050) at lr.b(EntityRenderer.java:903) at net.minecraft.client.Minecraft.x(Minecraft.java:873) at net.minecraft.client.Minecraft.run(Minecraft.java:750) at java.lang.Thread.run(Unknown Source) --- END ERROR REPORT ff4d316a ---------- PS: Sorry if my English is not good, I am French Thanks for reading this. EDIT: I tried all versions of Forge, it do the same thing