Index: /trunk/psphot/src/psphotSourceSize.c
===================================================================
--- /trunk/psphot/src/psphotSourceSize.c	(revision 42487)
+++ /trunk/psphot/src/psphotSourceSize.c	(revision 42488)
@@ -689,6 +689,7 @@
 
         // XXX this is running slowly and is too agressive, but it more-or-less works
+	// XXX EAM : note that injected sources do not normally have a footprint to use in masking
         psTrace("psphot", 6, "mask cosmic ray at %f, %f\n", source->peak->xf, source->peak->yf);
-        if (options->applyCRmask) {
+        if (options->applyCRmask && source->peak->footprint) {
             psphotMaskCosmicRay(readout, source, options->crMask, options->maxWindowCR);
         } else {