Index: trunk/ippconfig/recipes/filerules-simple.mdc
===================================================================
--- trunk/ippconfig/recipes/filerules-simple.mdc	(revision 35081)
+++ trunk/ippconfig/recipes/filerules-simple.mdc	(revision 35562)
@@ -88,6 +88,7 @@
 PSWARP.VARIANCE           INPUT    @FILES        FPA        VARIANCE
 PSWARP.MASK               INPUT    @FILES        FPA        MASK
-PSWARP.SKYCELL            INPUT    @FILES        FPA        IMAGE     
+PSWARP.SKYCELL            INPUT    @FILES        FPA        WCS
 PSWARP.ASTROM             INPUT    @FILES        FPA        CMF
+# Note: if input astrometry does not have sources, either set the above file type to WCS and/or set pswarp.config:SOURCES to false
 PSWARP.BKGMODEL		  INPUT	   @FILES	 CHIP	    IMAGE