Index: trunk/psModules/src/objects/pmPSF_IO.c
===================================================================
--- trunk/psModules/src/objects/pmPSF_IO.c	(revision 36856)
+++ trunk/psModules/src/objects/pmPSF_IO.c	(revision 36892)
@@ -511,11 +511,13 @@
         psMetadataAddF32 (header, PS_LIST_TAIL, "SKY_BIAS", PS_DATA_F32, "sky bias level", psf->skyBias);
 
-	float PSF_APERTURE =  psMetadataLookupF32(&status, roAnalysis, "PSF_APERTURE");
-	if (status) {
+	if (roAnalysis) {
+	  float PSF_APERTURE =  psMetadataLookupF32(&status, roAnalysis, "PSF_APERTURE");
+	  if (status) {
 	    psMetadataAddF32 (header, PS_LIST_TAIL, "PSF_APERTURE", PS_DATA_F32, "aperture for psf objects", PSF_APERTURE);
-	}
-	float PSF_FIT_RADIUS =  psMetadataLookupF32(&status, roAnalysis, "PSF_FIT_RADIUS");
-	if (status) {
+	  }
+	  float PSF_FIT_RADIUS =  psMetadataLookupF32(&status, roAnalysis, "PSF_FIT_RADIUS");
+	  if (status) {
 	    psMetadataAddF32 (header, PS_LIST_TAIL, "PSF_FIT_RADIUS", PS_DATA_F32, "aperture for psf objects", PSF_FIT_RADIUS);
+	  }
 	}