Index: trunk/Ohana/src/opihi/dvo/avextract.c
===================================================================
--- trunk/Ohana/src/opihi/dvo/avextract.c	(revision 35416)
+++ trunk/Ohana/src/opihi/dvo/avextract.c	(revision 37049)
@@ -166,6 +166,5 @@
   needMeasures = FALSE;
   for (i = 0; !needMeasures && (i < Nfields); i++) {
-    if (fields[i].magMode == MAG_NONE) continue;
-    if (fields[i].photcode == NULL) continue; // assert this?
+    if (fields[i].photcode == NULL) continue; // non-measure fields do not have a photcode
     if (fields[i].photcode[0].type == PHOT_REF) needMeasures = TRUE;
     if (fields[i].photcode[0].type == PHOT_DEP) needMeasures = TRUE;