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See related umbrella issue: java.lang.IllegalStateException: org.netbeans.modules.j2ee.websphere6.ui.wizard.ServerLocationPanel is both a WizardDescriptor.Panel and a Component. This is illegal because Component.isValid() conflicts with Panel.isValid(). See umbrella issue 154624 and issues 150223, 134601, 99680 and many others for why this is a Bad Thing. [catch] at org.openide.WizardDescriptor.checkComponent(WizardDescriptor.java:847) at org.openide.WizardDescriptor.updateStateOpen(WizardDescriptor.java:863)
*** This issue has been marked as a duplicate of 154408 ***