Index: trunk/psastro/src/psastroMosaicGradients.c
===================================================================
--- trunk/psastro/src/psastroMosaicGradients.c	(revision 12492)
+++ trunk/psastro/src/psastroMosaicGradients.c	(revision 12712)
@@ -15,4 +15,5 @@
         psTrace ("psastro", 4, "Chip %d: %x %x\n", view->chip, chip->file_exists, chip->process);
         if (!chip->process || !chip->file_exists) { continue; }
+	if (!chip->toFPA) { continue; }
 	
 	psRegion *region = pmChipExtent (chip);