fixed opening required plugin

	 */

	public static void main(String[] args) {

		// set the plugins.dir property to make the plugin appear in the Plugins menu

		Class<?> clazz = Aberration_Calibration.class;

		Class<?> clazz = Eyesis_Correction.class;

		String url = clazz.getResource("/" + clazz.getName().replace('.', '/') + ".class").toString();

		String pluginsDir = url.substring(5, url.length() - clazz.getName().length() - 6);

		System.setProperty("plugins.dir", pluginsDir);