ModPack doesn't work, and i did install it correctly:
Generated 2012-01-03 10:37
Minecraft: Minecraft 1.0.0
OS: Windows 7 (amd64) version 6.1
Java: 1.6.0_20, Sun Microsystems Inc.
VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: GeForce GTX 570/PCI/SSE2 version 4.2.0, NVIDIA Corporation
java.lang.IllegalArgumentException: Slot 254 is already occupied by eloraam.lighting.BlockLamp@64135f0a when adding buildcraft.zeldo.ChunkLoader.BlockChunkLoader@33c4bcda
at yy.<init>(Block.java:212)
at yy.<init>(Block.java:239)
at ba.<init>(BlockContainer.java:22)
at buildcraft.zeldo.ChunkLoader.BlockChunkLoader.<init>(BlockChunkLoader.java:18)
at mod_zAdditionalPipes.ModsLoaded(mod_zAdditionalPipes.java:358)
at ModLoader.init(ModLoader.java:838)
at ModLoader.AddAllRenderers(ModLoader.java:186)
at wb.<init>(wb.java:76)
at wb.<clinit>(wb.java:9)
at net.minecraft.client.Minecraft.a(SourceFile:265)
at net.minecraft.client.Minecraft.run(SourceFile:644)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT b7e8a8e4 ----------
EDIT: I forgot to change the block id on the additional pipes stuff.