Index: /trunk/psphot/src/psphotImageLoop.c
===================================================================
--- /trunk/psphot/src/psphotImageLoop.c	(revision 9290)
+++ /trunk/psphot/src/psphotImageLoop.c	(revision 9291)
@@ -19,33 +19,68 @@
     // files associated with the science image
     if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) {
+	psError(PS_ERR_UNKNOWN, false, "failed IO for fpa in psphot\n");
 	psFree(view);
 	return false;
     }
+
     while ((chip = pmFPAviewNextChip (view, input->fpa, 1)) != NULL) {
         psLogMsg ("psphot", 4, "Chip %d: %x %x\n", view->chip, chip->file_exists, chip->process);
         if (! chip->process || ! chip->file_exists) { continue; }
-	pmFPAfileIOChecks (config, view, PM_FPA_BEFORE);
-
+	if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) {
+            psError(PS_ERR_UNKNOWN, false, "failed IO for chip %d in psphot\n", view->chip);
+	    psFree (view);
+	    return false;
+	}
+	
 	while ((cell = pmFPAviewNextCell (view, input->fpa, 1)) != NULL) {
             psLogMsg ("psphot", 4, "Cell %d: %x %x\n", view->cell, cell->file_exists, cell->process);
             if (! cell->process || ! cell->file_exists) { continue; }
-	    pmFPAfileIOChecks (config, view, PM_FPA_BEFORE);
-
+	    if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) {
+		psError(PS_ERR_UNKNOWN, false, "failed IO for chip %d, cell %d in psphot\n", view->chip, view->cell);
+		psFree (view);
+		return false;
+	    }
+	    
 	    // process each of the readouts
 	    while ((readout = pmFPAviewNextReadout (view, input->fpa, 1)) != NULL) {
-		pmFPAfileIOChecks (config, view, PM_FPA_BEFORE);
+		if (!pmFPAfileIOChecks (config, view, PM_FPA_BEFORE)) {
+		    psError(PS_ERR_UNKNOWN, false, "failed IO for chip %d, cell %d, readout %d in psphot\n", view->chip, view->cell, view->readout);
+		    psFree (view);
+		    return false;
+		}
+		
 		if (! readout->data_exists) { continue; }
-
+		
 		// run the actual photometry analysis
-		psphotReadout (config, view);
-
-		pmFPAfileIOChecks (config, view, PM_FPA_AFTER);
+		if (!psphotReadout (config, view)) {
+		    psError(PS_ERR_UNKNOWN, false, "failed psphotReadout for chip %d, cell %d, readout %d\n", view->chip, view->cell, view->readout);
+		    psFree (view);
+		    return false;
+		}
+		
+		if (!pmFPAfileIOChecks (config, view, PM_FPA_AFTER)) {
+		    psError(PS_ERR_UNKNOWN, false, "failed IO for chip %d, cell %d, readout %d in psphot\n", view->chip, view->cell, view->readout);
+		    psFree (view);
+		    return false;
+		}
 	    }
-	    pmFPAfileIOChecks (config, view, PM_FPA_AFTER);
+	    if (!pmFPAfileIOChecks (config, view, PM_FPA_AFTER)) {
+		psError(PS_ERR_UNKNOWN, false, "failed IO for chip %d, cell %d in psphot\n", view->chip, view->cell);
+		psFree (view);
+		return false;
+	    }
 	}
-	pmFPAfileIOChecks (config, view, PM_FPA_AFTER);
+	if (!pmFPAfileIOChecks (config, view, PM_FPA_AFTER)) {
+            psError(PS_ERR_UNKNOWN, false, "failed IO for chip %d in psphot\n", view->chip);
+	    psFree (view);
+	    return false;
+	}
     }
-    pmFPAfileIOChecks (config, view, PM_FPA_AFTER);
-
+    if (!pmFPAfileIOChecks (config, view, PM_FPA_AFTER)) {
+	psError(PS_ERR_UNKNOWN, false, "failed IO for fpa in psphot\n");
+	psFree (view);
+	return false;
+    }
+    
     psFree (view);
     return true;