Bug 24231 ErrorDialog not accessible
The reorg done for the MessageDialog was not applied to the ErrorDialog so its contents cannot be read in 2.0.2.
bundles/org.eclipse.ui.workbench/extensions/org/eclipse/jface/dialogs/ErrorDialog.java
if (children == null || children.length == 0) {
		return status.matches(mask);
	}
	for (int i = 0; i<children.length; i++) {
		if (children[i].matches(mask))
			return true;
	}
	return false;
}
/**
 * Toggles the unfolding of the details area.  This is triggered by
 * the user pressing the details button.
 */
private void toggleDetailsArea() {
	Point windowSize = getShell().getSize();
	Point oldSize = getContents().computeSize(SWT.DEFAULT, SWT.DEFAULT);
	
	if (listCreated) {
		list.dispose();
		listCreated = false;
		detailsButton.setText(IDialogConstants.SHOW_DETAILS_LABEL);
	} else {
		list = createDropDownList((Composite)getContents());
		detailsButton.setText(IDialogConstants.HIDE_DETAILS_LABEL);
	}
	Point newSize = getContents().computeSize(SWT.DEFAULT, SWT.DEFAULT);
	getShell().setSize(new Point(windowSize.x, windowSize.y + (newSize.y - oldSize.y)));
}
}