why is my flume agent not working ?

[#1]

Folllowing is the error i get when i try running it.

Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at org.apache.flume.node.Application.<clinit>(Application.java:59) Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 1 more

[#2]

Can you paste your flume config & full log ?