Index: trunk/ppStack/src/ppStackConvolve.c
===================================================================
--- trunk/ppStack/src/ppStackConvolve.c	(revision 26454)
+++ trunk/ppStack/src/ppStackConvolve.c	(revision 26898)
@@ -59,9 +59,9 @@
         pmFPAfileActivate(config->files, false, NULL);
         ppStackFileActivationSingle(config, PPSTACK_FILES_CONVOLVE, true, i);
-	if (options->convolve) {
-	    // XXX PPSTACK.CONV.KERNEL not defined unless convolve
-	    // pmFPAfileActivate(config->files, true, "PPSTACK.CONV.KERNEL");
-	    pmFPAfileActivateSingle(config->files, true, "PPSTACK.CONV.KERNEL", i); // Activated file
-	}
+        if (options->convolve) {
+            // XXX PPSTACK.CONV.KERNEL not defined unless convolve
+            // pmFPAfileActivate(config->files, true, "PPSTACK.CONV.KERNEL");
+            pmFPAfileActivateSingle(config->files, true, "PPSTACK.CONV.KERNEL", i); // Activated file
+        }
 
         pmFPAfile *file = pmFPAfileSelectSingle(config->files, "PPSTACK.INPUT", i); // File of interest
@@ -94,4 +94,5 @@
         options->origCovars->data[i] = psMemIncrRefCounter(readout->covariance);
         if (!ppStackMatch(readout, options, i, config)) {
+	    // XXX many things can cause a failure of ppStackMatch -- should some be handled differently? 
             psErrorStackPrint(stderr, "Unable to match image %d --- ignoring.", i);
             options->inputMask->data.PS_TYPE_VECTOR_MASK_DATA[i] |= PPSTACK_MASK_MATCH;