[HELP] Error when testing mod through eclipse

[SharkyGAMER]

I get this error whenever I try to test my mod in eclipse.

 

 

Exception in thread "main" java.lang.NoClassDefFoundError: net/minecraft/launchwrapper/Launch

Caused by: java.lang.ClassNotFoundException: net.minecraft.launchwrapper.Launch

at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

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

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

 

 

 

There are absolutely no errors in my code, and when I launch Minecraft through magiclauncher it works fine.

Mod source code: http://github.com/DigitallyNative/Minextension1

 

[luacs1998]

Did you import the libraries?