[Tue Oct 25 22:18:14 2011] Warning, bgd. level not computed because source mask doesn't exist [Tue Oct 25 22:18:15 2011] Creation of lightcurve plot failed [Tue Oct 25 22:18:15 2011] Creation of lightcurve plot failed [Tue Oct 25 22:18:15 2011] Warning, bgd. level not computed because source mask doesn't exist [Tue Oct 25 22:18:15 2011] Creation of lightcurve plot failed [Tue Oct 25 22:18:15 2011] Creation of lightcurve plot failed