Index: branches/eam_branches/psphot.20100506/src/psphotStackImageLoop.c
===================================================================
--- branches/eam_branches/psphot.20100506/src/psphotStackImageLoop.c	(revision 27876)
+++ branches/eam_branches/psphot.20100506/src/psphotStackImageLoop.c	(revision 27884)
@@ -33,10 +33,10 @@
         psLogMsg ("psphot", 4, "Chip %d: %x %x\n", view->chip, chip->file_exists, chip->process);
         if (! chip->process || ! chip->file_exists) { continue; }
-        // if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) ESCAPE ("failed input for Chip in psphotStack.");
+        if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) ESCAPE ("failed input for Chip in psphotStack.");
 
         // there is now only a single chip (multiple readouts?). loop over it and process
         while ((cell = pmFPAviewNextCell (view, input->fpa, 1)) != NULL) {
             psLogMsg ("psphot", 5, "Cell %d: %x %x\n", view->cell, cell->file_exists, cell->process);
-	    // if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) ESCAPE ("failed input for Cell in psphotStack.");
+	    if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) ESCAPE ("failed input for Cell in psphotStack.");
 
             // process each of the readouts