Invalid preference category path: org.eclipse.birt.chart.reportitem.ui.ChartPreferencePage (bundle: org.eclipse.birt.chart.ui.extension, page: org.eclipse.birt.chart.ui.swt.fieldassist.preferences.FieldAssistPreferencePage)
The error appears because birt is not fully packaged. The error will be gone once all features are in fedora.
*** This bug has been marked as a duplicate of bug 486367 ***