Index: trunk/ppMerge/src/ppMergeCombine.c
===================================================================
--- trunk/ppMerge/src/ppMergeCombine.c	(revision 9541)
+++ trunk/ppMerge/src/ppMergeCombine.c	(revision 9737)
@@ -113,5 +113,4 @@
             pmReadout *readout = pmReadoutAlloc(cell); // Output readout of interest
             psArray *stack = psArrayAlloc(filenames->n); // Stack of readouts to combine
-            stack->n = filenames->n;
             psVector *cellScales = NULL; // Scales for this cell
             if (scales) {
@@ -128,10 +127,8 @@
                 int numRead = 0;  // Number of inputs read
                 psVector *exptimes = psVectorAlloc(filenames->n, PS_TYPE_F32);  // Reference measurements
-                exptimes->n = filenames->n;
                 psVectorInit(exptimes, 0);
                 psArray *images = psArrayAlloc(filenames->n); // Array of images
                 psArray *weights = psArrayAlloc(filenames->n); // Array of weights
                 psArray *masks = psArrayAlloc(filenames->n); // Array of masks
-                images->n = masks->n = weights->n = filenames->n;
                 for (int i = 0; i < filenames->n; i++) {
                     if (! filenames->data[i] || strlen(filenames->data[i]) == 0) {