Use this URL to reset the Editor to your settings:

http://highslide.com/editor/?config=%7B%22preset%22%3A+%22html-white%22,+%22loadingStyle%22%3A+%22White%3A+small+icon%22,+%22applyDimming%22%3A+true,+%22dimmingOpacity%22%3A+%22.7%22,+%22alignment%22%3A+%22center%22,+%22allowMultipleInstances%22%3A+false,+%22numberOfImagesToPreload%22%3A+%226%22,+%22captionPosition%22%3A+%22top+center%22,+%22useCloseButton%22%3A+true,+%22creditsPosition%22%3A+%22bottom+center%22,+%22htmlInline%22%3A+true,+%22htmlClose%22%3A+false,+%22htmlResize%22%3A+false,+%22useTitleBar%22%3A+false%7D