I keep getting this error in eclipse. Eclipse says there in an error in the folder containing the sourc code but there is no error:

Description Resource Path Location Type

The project was not built due to "Could not delete '/Minecraft/bin/cpw'.". Fix the problem, then try refreshing this project and building it since it may be inconsistent Minecraft Unknown Java Problem

 

Log:

Nov 15, 2013 9:41:20 PM net.minecraft.launchwrapper.LogWrapper log

INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker

Nov 15, 2013 9:41:20 PM net.minecraft.launchwrapper.LogWrapper log

SEVERE: Unable to launch

java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker

at java.net.URLClassLoader$1.run(Unknown Source)

at java.net.URLClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:102)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:94)

at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

 

 

 

 

Hmm... I would say reinstall Forge first, then come back if it's not working again.