Index: trunk/ippScripts/scripts/warp_skycell.pl
===================================================================
--- trunk/ippScripts/scripts/warp_skycell.pl	(revision 35247)
+++ trunk/ippScripts/scripts/warp_skycell.pl	(revision 35277)
@@ -247,5 +247,5 @@
     if (($doBackground)) {
 	# &&($imfile->{background_model} == 1)
-	if ($imfile->{cam_background_model}) {
+	if (($imfile->{cam_background_model})&&($imfile->{cam_background_model} != 32767)) {
 	    $bkg    = $ipprc->filename("PPIMAGE.BACKMDL", $imfile->{cam_path_base}, $imfile->{class_id});
 	}