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
dialogTitle;
	this.message = message == null ?
		status.getMessage():
		JFaceResources.format("Reason", new Object[] {message,  status.getMessage()}); 
	this.status = status;
	statusList = Arrays.asList(status.getChildren());
	this.displayMask = displayMask;
	setShellStyle(SWT.DIALOG_TRIM | SWT.RESIZE | SWT.APPLICATION_MODAL);
}
/* (non-Javadoc)
 * Method declared on Dialog.
 * Handles the pressing of the Ok or Details button in this dialog.
 * If the Ok button was pressed then close this dialog.  If the Details
 * button was pressed then toggle the displaying of the error details area.
 * Note that the Details button will only be visible if the error being
 * displayed specifies child details.
 */
protected void buttonPressed(int id) {
	if (id == IDialogConstants.DETAILS_ID) {  
		toggleDetailsArea();
	} else {
		super.buttonPressed(id);
	} 
}
/* (non-Javadoc)
 * Method declared in Window.
 */
protected void configureShell(Shell shell) {
	super.configureShell(shell);
	shell.setText(title);