Index: /trunk/ppSub/src/ppSubReadout.c
===================================================================
--- /trunk/ppSub/src/ppSubReadout.c	(revision 17797)
+++ /trunk/ppSub/src/ppSubReadout.c	(revision 17798)
@@ -160,13 +160,15 @@
 
     // Statistics on the matching
-    if (psMetadataLookup(inConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE)) {
-        metadataCopySingle(stats, inConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE);
-        metadataCopySingle(stats, inConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_NUM);
-        metadataCopySingle(stats, inConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_RMS);
-    }
-    if (psMetadataLookup(refConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE)) {
-        metadataCopySingle(stats, refConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE);
-        metadataCopySingle(stats, refConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_NUM);
-        metadataCopySingle(stats, refConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_RMS);
+    if (stats) {
+        if (psMetadataLookup(inConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE)) {
+            metadataCopySingle(stats, inConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE);
+            metadataCopySingle(stats, inConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_NUM);
+            metadataCopySingle(stats, inConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_RMS);
+        }
+        if (psMetadataLookup(refConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE)) {
+            metadataCopySingle(stats, refConv->analysis, PM_SUBTRACTION_ANALYSIS_MODE);
+            metadataCopySingle(stats, refConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_NUM);
+            metadataCopySingle(stats, refConv->analysis, PM_SUBTRACTION_ANALYSIS_STAMPS_RMS);
+        }
     }