Tests in error: 
  FormPropertySheetPageTest.testBdo:142->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testDel:214->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testAudio:115->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testEmbed:239->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testArea:99->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testBase:131->selectElementByName:331 » IllegalArgument
  FormPropertySheetPageTest.testForm:268->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testPage:284->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testFieldset:254->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testA:84->selectElementByID:311 » IllegalArgument Ar...
  FormPropertySheetPageTest.testCommand:197->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testBlockquote:154->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testDetails:227->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testButton:166->selectElementByID:311 » IllegalArgument
  FormPropertySheetPageTest.testCanvas:184->selectElementByID:311 » IllegalArgument

java.lang.IllegalArgumentException: Argument not valid
	at org.eclipse.swt.SWT.error(SWT.java:4458)
	at org.eclipse.swt.SWT.error(SWT.java:4392)
	at org.eclipse.swt.SWT.error(SWT.java:4363)
	at org.eclipse.swt.widgets.Widget.error(Widget.java:477)
	at org.eclipse.swt.widgets.TabItem.setControl(TabItem.java:286)
	at org.jboss.tools.jst.web.ui.internal.properties.FormPropertySheetViewer.refresh(FormPropertySheetViewer.java:150)
	at org.jboss.tools.jst.web.ui.internal.properties.FormPropertySheetViewer.setInput(FormPropertySheetViewer.java:251)
	at org.jboss.tools.jst.web.ui.internal.properties.FormPropertySheetPage.selectionChanged(FormPropertySheetPage.java:129)
	at org.jboss.tools.jst.web.ui.test.FormPropertySheetPageTest.selectElementByID(FormPropertySheetPageTest.java:311)
	at org.jboss.tools.jst.web.ui.test.FormPropertySheetPageTest.testBdo(FormPropertySheetPageTest.java:142)