Index: branches/czw_branch/20101203/ppStack/src/ppStackConvolve.c
===================================================================
--- branches/czw_branch/20101203/ppStack/src/ppStackConvolve.c	(revision 30118)
+++ branches/czw_branch/20101203/ppStack/src/ppStackConvolve.c	(revision 30586)
@@ -126,4 +126,11 @@
                 options->inputMask->data.PS_TYPE_VECTOR_MASK_DATA[i] |= PPSTACK_MASK_MATCH;
                 psErrorClear();
+                if (!ppStackFilesIterateUp(config)) {
+                    psFree(rng);
+                    psFree(fpaList);
+                    psFree(cellList);
+                    psFree(target);
+                    return false;
+                }
                 continue;
             }