When I open the JBoss Server View, I get : Could not create the view: org/eclipse/wst/server/ui/internal/view/... I am using eclipse-SDK-3.4RC3-win32.zip Jboss 4.2.3.GA jdk1.6 java_ee_sdk-5_06-windows.exe The detailed message is: java.lang.NoClassDefFoundError: org/eclipse/wst/server/ui/internal/view/... at org.jboss.ide.eclipse.as.ui.views.server... at org.jboss.ide.eclipse.as.ui.views.server... at org.jboss.ide.eclipse.as.ui.views.server... at org.eclipse.ui.internal.ViewReference.cr... at org.eclipse.ui.internal.ViewReference.cr... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4189905#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...