what does this exception means The module has not been deployed ?

[naved momin]

i get this exception when ever i run any servlet or jsp code within netbeans
but i runs fine outside netbeans why so
i have set the server properly
and server is also running , i have already created a role manager-gui with username & password
whats missing please tell me ?
i m just felling like yakssss with this exception
tomcat 7
netbeans 7

init:
deps-module-jar:
deps-ear-jar:
deps-jar:
library-inclusion-in-archive:
library-inclusion-in-manifest:
compile:
compile-jsps:
Starting Tomcat process...
Waiting for Tomcat...
Tomcat server started.
In-place deployment at C:\murach\servlet_jsp\netbeans\book_apps\ch03email\build\web
Deployment is in progress...

deploy?config=file%3A%2FC%3A%2FUsers%2FAdmin%2FAppData%2FLocal%2FTemp%2Fcontext1938034810041067530.xml&path=/ch03email
http://localhost:8080/manager/deploy?config=file%3A%2FC%3A%2FUsers%2FAdmin%2FAppData%2FLocal%2FTemp%2Fcontext1938034810041067530.xml&path=/ch03email
C:\murach\servlet_jsp\netbeans\book_apps\ch03email\nbproject\build-impl.xml:721: 
The module has not been deployed.
	at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:210)
	at org.netbeans.modules.j2ee.ant.Deploy.execute(Deploy.java:106)
	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
	at sun.reflect.GeneratedMethodAccessor92.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
	at org.apache.tools.ant.Task.perform(Task.java:348)
	at org.apache.tools.ant.Target.execute(Target.java:390)
	at org.apache.tools.ant.Target.performTasks(Target.java:411)
	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
	at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
	at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
	at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:284)
	at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:539)
	at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)
BUILD FAILED (total time: 1 minute 4 seconds)