Build Error " Dependency build will not work for the language definition "LINKEDIT" because it does not have DD allocations that are identified as outputs."

Hi,

I am using RTC on System z v4.0.1 and RTC client v 4.0.1. The build Engine of type Rational Build Agent
and Build Definition Typw - Ant Enterprise Extension Build Definition.

When I make Build Request, it was failed and the following exceptions I could see from build log

1.
Dependency build will not work for the language definition "LINKEDIT" because it does not have DD allocations that are identified as outputs.   
Dependency build will not work for the language definition "COBOL" because it does not have DD allocations that are identified as outputs.

2.
Exception in thread "main" java.lang.NoClassDefFoundError: org.apache.tools.ant.launch.Launcher
* Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.launch.Launcher
*     at java.net.URLClassLoader.findClass(URLClassLoader.java:434)
*     at java.lang.ClassLoader.loadClass(ClassLoader.java:677)
*     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:358)
*     at java.lang.ClassLoader.loadClass(ClassLoader.java:643)
* Could not find the main class: org.apache.tools.ant.launch.Launcher.  Program will exit

Can any one help me in completing this build request.

Thanks in Advance,
Viji