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This bug was originally marked as duplicate of bug 177307, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 7.1 RC1 (Build 201111242103) VM: Java HotSpot(TM) 64-Bit Server VM, 20.4-b02-402, Java(TM) SE Runtime Environment, 1.6.0_29-b11-402-11M3527 OS: Mac OS X Stacktrace: java.lang.IllegalArgumentException: Data object does not contain a sun-web.xml graph. at org.netbeans.modules.j2ee.sun.ddloaders.multiview.web.SunWebBaseView.<init>(SunWebBaseView.java:62) at org.netbeans.modules.j2ee.sun.ddloaders.multiview.web.SunWebView.<init>(SunWebView.java:58) at org.netbeans.modules.j2ee.sun.ddloaders.multiview.web.SunWebOverviewMultiViewElement.createView(SunWebOverviewMultiViewElement.java:68) at org.netbeans.modules.j2ee.sun.ddloaders.multiview.DDMultiViewElement.componentShowing(DDMultiViewElement.java:78) at org.netbeans.core.multiview.MultiViewPeer.peerComponentShowing(MultiViewPeer.java:277) at org.netbeans.core.multiview.MultiViewCloneableTopComponent.componentShowing(MultiViewCloneableTopComponent.java:129)
Created attachment 113718 [details] stacktrace
This bug already has 5 duplicates see http://statistics.netbeans.org/exceptions/detail.do?id=183340
Created attachment 125566 [details] stacktrace Trying to open glassfish-web.xml configuration file
Created attachment 127758 [details] stacktrace
Please can you attach files which you were opening? I need to reproduce it locally.
Marking as incomplete. I need glassfish-web.xml configuration file that is causing this exception in dev builds.