OK, I'm new here and don't know how to post a new question but am having similar problems - just downloaded Technic and Technic/Tekkit will not launch. I'm on OS 10.7.5 - latest version of Java and here is error I'm getting..... help!!!
BEGIN ERROR REPORT 5c907607 --------
Generated 1/24/13 2:14 PM
Minecraft: Minecraft 1.2.5
OS: Mac OS X (x86_64) version 10.7.5
Java: 1.6.0_37, Apple Inc.
VM: Java HotSpot 64-Bit Server VM (mixed mode), Apple Inc.
LWJGL: 2.4.2
OpenGL: AMD Radeon HD 6770M OpenGL Engine version 2.1 ATI-7.32.12, ATI Technologies Inc.
java.lang.IllegalArgumentException: Slot 194 is already occupied by immibis.tubestuff.BlockTubestuff@6fc64ae1 when adding immibis.tubestuff.BlockTubestuff@435e331b
at pb.<init>(Block.java:251)
at agy.<init>(BlockContainer.java:7)
at immibis.core.BlockCombined.<init>(BlockCombined.java:35)
at immibis.tubestuff.BlockTubestuff.<init>(BlockTubestuff.java:17)
at mod_TubeStuff$1.registerBlock(mod_TubeStuff.java:65)
at immibis.core.CoreProxy.RegisterBlockID(CoreProxy.java:31)
at mod_TubeStuff.load(mod_TubeStuff.java:62)
at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:356)
at cpw.mods.fml.common.Loader.modInit(Loader.java:273)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:628)
at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:223)
at net.minecraft.client.Minecraft.a(Minecraft.java:429)
at net.minecraft.client.Minecraft.run(Minecraft.java:738)
at java.lang.Thread.run(Thread.java:680)
--- END ERROR REPORT 78172bb5 ----------