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<h1 id="My_Web_Application_Bundle_stopped_working_when_I_moved_to_Virgo_3.x._What_happened.3F">My Web Application Bundle stopped working when I moved to Virgo 3.x. What happened?</h1>
<p>Virgo Server for Apache Tomcat 3.0 conforms more strictly to the OSGi web applications specification and does not apply default values to some of the manifest headers of a WAB like it used to in Virgo 2.x.</p>
<p>You can easily check whether this is the problem as follows.</p>
<p>As a migration aid, which may be removed in future releases, the previous behaviour may be re-instated by
<a href="http://www.eclipse.org/virgo/documentation/virgo-documentation-3.0.0.RELEASE/docs/virgo-user-guide/html/ch11s08.html" target="doc_external">configuring</a> the Web Integration Layer to set WABHeaders=defaulted in $SERVER_HOME/repository/ext/org.eclipse.virgo.web.properties. Please note there is a
<a href="http://www.eclipse.org/virgo/documentation/virgo-documentation-3.0.0.RELEASE/docs/virgo-user-guide/html/apbs07.html" target="doc_external">known issue</a> with certain WAR files which may be worked around using this migration aid.
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