Well that's a new one [facepalm, no help actually required]

2013-10-08 11:33:12 [iNFO] [sTDOUT] ---- Minecraft Crash Report ----
2013-10-08 11:33:12 [iNFO] [sTDOUT] // Why is it breaking 
2013-10-08 11:33:12 [iNFO] [sTDOUT] 
2013-10-08 11:33:12 [iNFO] [sTDOUT] Time: 10/8/13 11:33 AM
2013-10-08 11:33:12 [iNFO] [sTDOUT] Description: Initializing game
2013-10-08 11:33:12 [iNFO] [sTDOUT] 
2013-10-08 11:33:12 [iNFO] [sTDOUT] java.lang.NoClassDefFoundError: net/minecraft/util/Vec3
2013-10-08 11:33:12 [iNFO] [sTDOUT] 	at net.minecraft.client.model.PositionTextureVertex.<init>(PositionTextureVertex.java:15)

Go Minecraft, go! 9..9

You forgot where you put your Vec3s (class totally exists: I have it open).

Also, best crash message ever: "Why is it breaking"

"I blame Dinnerbone"

Lol, well now it's confirmed the compiler is not only stupid but also blind, that's fun..

"I blame Dinnerbone"

 

Lol, well now it's confirmed the compiler is not only stupid but also blind, that's fun..

"New"?  I opened Eclipse this morning when the only thing that changed from yesterday was that I'd done some work on a different computer, so I moved my updated sourcecode in.  The top-level "Minecraft" doodad in the project window indicated an error, but NONE of the subitems had an error.  So I ran it, ignored the "project has errors" warning just to see what it would do, got the above error.

So I'm redecompiling.  Heh.