Bug 255172 [Import/Export] Warning message in the import wizard is not so helpful
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
* Display an error dialog with the specified message.
	 * 
	 * @param message
	 * 		the error message
	 */
	protected void displayErrorDialog(String message) {
		MessageDialog.openError(getContainer().getShell(),
				getErrorDialogTitle(), message);
	}
	/**
	 * Get the title for an error dialog. Subclasses should override.
	 */
	protected String getErrorDialogTitle() {
		return IDEWorkbenchMessages.WizardExportPage_internalErrorTitle;
	}
	/**
	 * Collect the list of .project files that are under directory into files.
	 * 
	 * @param files
	 * @param directory
	 * @param directoriesVisited
	 * 		Set of canonical paths of directories, used as recursion guard
	 * @param monitor
	 * 		The monitor to report to
	 * @return boolean <code>true</code> if the operation was completed.
	 */
	private boolean collectProjectFilesFromDirectory(Collection files,
			File directory, Set directoriesVisited, IProgressMonitor monitor) {
		if (monitor.isCanceled()) {
			return false;