Index: trunk/psphot/src/psphotImageMedian.c
===================================================================
--- trunk/psphot/src/psphotImageMedian.c	(revision 7434)
+++ trunk/psphot/src/psphotImageMedian.c	(revision 7582)
@@ -56,5 +56,5 @@
     if (model == NULL) {
         // select model pixels, from output background model file, or create
-        model = pmFPAfileCreateInternal (config->files, "PSPHOT.BACKMDL", nx, ny, PS_TYPE_F32);
+        model = pmFPAfileDefineInternal (config->files, "PSPHOT.BACKMDL", nx, ny, PS_TYPE_F32);
     } else {
         // replace the supplied image data with an image of the desired size
@@ -109,5 +109,5 @@
     pmReadout *background = pmFPAfileThisReadout (config->files, view, "PSPHOT.BACKGND");
     if (background == NULL) {
-        background = pmFPAfileCreateInternal (config->files, "PSPHOT.BACKGND", Nx, Ny, PS_TYPE_F32);
+        background = pmFPAfileDefineInternal (config->files, "PSPHOT.BACKGND", Nx, Ny, PS_TYPE_F32);
     }
     psF32 **backData = background->image->data.F32;