[jbosstools-issues] [JBoss JIRA] (JBDS-3988) IllegalArgumentException below MozillaEditor.dispose (thrown in ListenerList.remove)

[Automated Error Reporting Bot (JIRA)]

Automated Error Reporting Bot created JBDS-3988:
---------------------------------------------------

             Summary: IllegalArgumentException below MozillaEditor.dispose (thrown in ListenerList.remove)
                 Key: JBDS-3988
                 URL: https://issues.jboss.org/browse/JBDS-3988
             Project: Red Hat JBoss Developer Studio (devstudio)
          Issue Type: Bug
          Components: visual-page-editor-core
            Reporter: Automated Error Reporting Bot


The following problem was reported via the automated error reporting:

Message: HIDDEN
{noformat}
java.lang.IllegalArgumentException: null
    at org.eclipse.core.runtime.ListenerList.remove(ListenerList.java:155)
    at org.eclipse.core.commands.common.EventManager.removeListenerObject(EventManager.java:99)
    at org.eclipse.ui.preferences.ScopedPreferenceStore.removePropertyChangeListener(ScopedPreferenceStore.java:496)
    at org.jboss.tools.vpe.editor.mozilla.MozillaEditor.dispose(MozillaEditor.java:681)
    at org.jboss.tools.vpe.editor.mozilla.MozillaPreview.dispose(MozillaPreview.java:238)
    at org.jboss.tools.vpe.editor.VpeEditorPart.dispose(VpeEditorPart.java:918)
    at org.jboss.tools.jst.web.ui.internal.editor.jspeditor.JSPMultiPageEditor.dispose(JSPMultiPageEditor.java:708)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.invalidate(CompatibilityPart.java:238)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.destroy(CompatibilityPart.java:394)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(null:-2)
    at sun.reflect.NativeMethodAccessorImpl.invoke(null:-1)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(null:-1)
    at java.lang.reflect.Method.invoke(null:-1)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
{noformat}


Bundles:
| org.eclipse.core.commands | 3.7.0.v20150422-0725 | 3.8.0.v20160316-1921 |
| org.eclipse.core.runtime | 3.11.0.v20150405-1723 | 3.12.0.v20160222-1238 |
| org.eclipse.e4.core.di | 1.5.0.v20150421-2214 | 1.6.0.v20160211-1614 |
| org.eclipse.ui | 3.107.0.v20150507-1945 | 3.107.0.v20160108-0627 |
| org.jboss.tools.jst.web.ui | 3.7.1.Final-v20160331-0256-B96 | 3.7.1.Final-v20160331-0256-B96 |
| org.jboss.tools.vpe | 3.7.1.Final-v20160331-0327-B91 | 3.7.1.Final-v20160331-0327-B91 |

Operating Systems:
| Linux | 2.6.32.18 | 4.5.6.fc23 |
| Windows | 6.1.0 | 10.0.0 |


The above information is a snapshot of the collected data. Visit [this page|https://redhat.ctrlflow.com/reviewers/#!/problems/57170671e4b052a77cbaaaa6] for the latest data.

Thank you for your assistance.
 Your friendly error-reports-inbox.





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