Index: trunk/psModules/src/objects/pmSource.c
===================================================================
--- trunk/psModules/src/objects/pmSource.c	(revision 36623)
+++ trunk/psModules/src/objects/pmSource.c	(revision 36747)
@@ -162,4 +162,5 @@
     source->sky    	     = NAN;
     source->skyErr 	     = NAN;    
+    source->extSN  	     = NAN;    
 
     source->region = psRegionSet(NAN, NAN, NAN, NAN);