Could not publish to the server. Tomcat 7.0
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I am getting below error when trying to deploy war file on Tomcat 7.0.28 server. My Eclipse is Eclipse Java EE IDE for Web Developers.Version: Indigo Service Release 2 Build id: 20120216-1857.

    java.lang.NullPointerException
    	at java.io.FileInputStream.<init>(Unknown Source)
    	at org.eclipse.wst.server.core.util.PublishHelper.copyFile(PublishHelper.java:501)
    	at org.eclipse.wst.server.core.util.PublishHelper.publishDelta(PublishHelper.java:435)
    	at org.eclipse.wst.server.core.util.PublishHelper.publishDelta(PublishHelper.java:459)
    	at org.eclipse.wst.server.core.util.PublishHelper.publishDelta(PublishHelper.java:459)
    	at org.eclipse.jst.server.tomcat.core.internal.PublishOperation2.publishDir(PublishOperation2.java:141)
    	at org.eclipse.jst.server.tomcat.core.internal.PublishOperation2.execute(PublishOperation2.java:82)
    	at org.eclipse.wst.server.core.model.ServerBehaviourDelegate.performTasks(ServerBehaviourDelegate.java:1290)
    	at org.eclipse.wst.server.core.model.ServerBehaviourDelegate.publish(ServerBehaviourDelegate.java:933)
    	at org.eclipse.wst.server.core.model.ServerBehaviourDelegate.publish(ServerBehaviourDelegate.java:774)
    	at org.eclipse.wst.server.core.internal.Server.publishImpl(Server.java:3087)
    	at org.eclipse.wst.server.core.internal.Server$PublishJob.run(Server.java:345)
    	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
    
    
    eclipse.buildId=M20120208-0800
    java.version=1.6.0_32
    java.vendor=Sun Microsystems Inc.
    BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
    Framework arguments:  -product org.eclipse.epp.package.jee.product
    Command-line arguments:  -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.jee.product

