Index: trunk/stac/src/sum.c
===================================================================
--- trunk/stac/src/sum.c	(revision 5745)
+++ trunk/stac/src/sum.c	(revision 6771)
@@ -22,5 +22,5 @@
         psFits *fits = psFitsOpen(inputNames->data[i], "r"); // FITS file
         psRegion readRegion = {0, 0, 0, 0}; // Region to read
-        psImage *image = psFitsReadImage(NULL, fits, readRegion, 0);
+        psImage *image = psFitsReadImage(fits, readRegion, 0);
         if (numCols == 0 && numRows == 0) {
             // First run through --- set the size, initialise the output, read the header
@@ -75,5 +75,5 @@
 
     psFits *fits = psFitsOpen(outputName, "w");
-    (void)psFitsWriteImage(fits, header, output, 0);
+    (void)psFitsWriteImage(fits, header, output, 0, NULL);
     psFitsClose(fits);
     psFree(output);