Ok, sorry if this has been answered before but I don't know quite understand something, I already have modloader, optifine, TMI...etc. I have never used forge before so do I need to delete my current jar file and install it all again with forge, or can I simply install forge on top of all that?

Start from scratch, do not install ModLoader at all, and install Optifine after forge.

I installed forge and optifine, and it only worked for a second before crashing, and now I can't get on.

Any help?

--- BEGIN ERROR REPORT a3b62f81 --------

Generated 27/08/12 05:10

 

- Minecraft Version: 1.3.2

- Operating System: Windows XP (x86) version 5.1

- Java Version: 1.7.0_03, Oracle Corporation

- Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

- Memory: 406787504 bytes (387 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)

- JVM Flags: 2 total; -Xms512m -Xmx1024m

- Is Modded: Definitely; 'forge,fml'

- Profiler Position: N/A (disabled)

- Player Count: 1 / 8; [gu['Flash_hsalF'/109, l='New World', x=-657,30, y=14,36, z=-288,00]]

- World New World Entities: 0 total; []

- World New World Players: 0 total; []

- World New World Chunk Stats: ServerChunkCache: 0 Drop: 0

- Type: Integrated Server

 

java.lang.NullPointerException

at Reflector.callInt(Reflector.java:214)

at jw.d(EntityLiving.java:1030)

at jw.a(EntityLiving.java:882)

at um.a(Explosion.java:126)

at gr.a(WorldServer.java:827)

at up.a(World.java:2391)

at nl.d(SourceFile:83)

at nl.h_(SourceFile:73)

at up.a(World.java:2022)

at gr.a(WorldServer.java:538)

at up.g(World.java:1986)

at up.h(World.java:1867)

at gr.h(WorldServer.java:437)

at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:616)

at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:547)

at axv.p(IntegratedServer.java:102)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:453)

at ep.run(SourceFile:539)

--- END ERROR REPORT 5c4a1c5c ----------

 

 

All I can say is try again. Optifine and Forge work together just fine.