Index: /trunk/ppMerge/src/ppMergeScaleZero.c
===================================================================
--- /trunk/ppMerge/src/ppMergeScaleZero.c	(revision 7840)
+++ /trunk/ppMerge/src/ppMergeScaleZero.c	(revision 7841)
@@ -166,5 +166,5 @@
     }
     if (options->exptime) {
-        exptime = psImageAlloc(filenames->n, data->numCells, PS_TYPE_F32);
+        exptime = psImageAlloc(data->numCells, filenames->n, PS_TYPE_F32);
     }