Index: /branches/eam_branches/20091201/ppSub/src/ppSubCamera.c
===================================================================
--- /branches/eam_branches/20091201/ppSub/src/ppSubCamera.c	(revision 26802)
+++ /branches/eam_branches/20091201/ppSub/src/ppSubCamera.c	(revision 26803)
@@ -23,5 +23,6 @@
 
 // Define an input file
-static pmFPAfile *defineInputFile(pmConfig *config,// Configuration
+static pmFPAfile *defineInputFile(bool *success,
+                                  pmConfig *config,// Configuration
                                   pmFPAfile *bind,    // File to which to bind, or NULL
                                   char *filerule,     // Name of file rule
@@ -32,4 +33,6 @@
     bool status;
 
+    *success = false;
+
     // look for the file on the RUN metadata
     pmFPAfile *file = pmFPAfileDefineFromRun(&status, bind, config, filerule); // File to return
@@ -47,9 +50,11 @@
         if (!status) {
             psError(PS_ERR_UNKNOWN, false, "Failed to load file definition for %s", filerule);
-            return false;
+            return NULL;
         }
     }
 
     if (!file) {
+        // no file defined
+        *success = true;
         return NULL;
     }
@@ -60,4 +65,5 @@
     }
 
+    *success = true;
     return file;
 }
@@ -136,4 +142,6 @@
 bool ppSubCamera(ppSubData *data)
 {
+    bool success = true;
+
     psAssert(data, "Require processing data");
     pmConfig *config = data->config;
@@ -141,25 +149,52 @@
 
     // Input image
-    pmFPAfile *input = defineInputFile(config, NULL, "PPSUB.INPUT", "INPUT", PM_FPA_FILE_IMAGE);
-    if (!input) {
+    pmFPAfile *input = defineInputFile(&success, config, NULL, "PPSUB.INPUT", "INPUT", PM_FPA_FILE_IMAGE);
+    if (!success) {
         psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.INPUT");
         return false;
     }
-    defineInputFile(config, input, "PPSUB.INPUT.MASK", "INPUT.MASK", PM_FPA_FILE_MASK);
-    pmFPAfile *inVar = defineInputFile(config, input, "PPSUB.INPUT.VARIANCE", "INPUT.VARIANCE",
-                                       PM_FPA_FILE_VARIANCE);
-    defineInputFile(config, NULL, "PPSUB.INPUT.SOURCES", "INPUT.SOURCES", PM_FPA_FILE_CMF);
+
+    defineInputFile(&success, config, input, "PPSUB.INPUT.MASK", "INPUT.MASK", PM_FPA_FILE_MASK);
+    if (!success) {
+        psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.INPUT.MASK");
+        return false;
+    }
+
+    pmFPAfile *inVar = defineInputFile(&success, config, input, "PPSUB.INPUT.VARIANCE", "INPUT.VARIANCE", PM_FPA_FILE_VARIANCE);
+    if (!success) {
+        psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.INPUT.VARIANCE");
+        return false;
+    }
+
+    defineInputFile(&success, config, NULL, "PPSUB.INPUT.SOURCES", "INPUT.SOURCES", PM_FPA_FILE_CMF);
+    if (!success) {
+        psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.INPUT.SOURCES");
+        return false;
+    }
 
     // Reference image
-    pmFPAfile *ref = defineInputFile(config, NULL, "PPSUB.REF", "REF", PM_FPA_FILE_IMAGE);
-    if (!ref) {
+    pmFPAfile *ref = defineInputFile(&success, config, NULL, "PPSUB.REF", "REF", PM_FPA_FILE_IMAGE);
+    if (!success) {
         psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.REF");
         return false;
     }
-    defineInputFile(config, ref, "PPSUB.REF.MASK", "REF.MASK", PM_FPA_FILE_MASK);
-    pmFPAfile *refVar = defineInputFile(config, ref, "PPSUB.REF.VARIANCE", "REF.VARIANCE",
-                                        PM_FPA_FILE_VARIANCE);
-    defineInputFile(config, NULL, "PPSUB.REF.SOURCES", "REF.SOURCES", PM_FPA_FILE_CMF);
-
+
+    defineInputFile(&success, config, ref, "PPSUB.REF.MASK", "REF.MASK", PM_FPA_FILE_MASK);
+    if (!success) {
+        psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.REF.MASK");
+        return false;
+    }
+
+    pmFPAfile *refVar = defineInputFile(&success, config, ref, "PPSUB.REF.VARIANCE", "REF.VARIANCE", PM_FPA_FILE_VARIANCE);
+    if (!success) {
+        psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.REF.VARIANCE");
+        return false;
+    }
+
+    defineInputFile(&success, config, NULL, "PPSUB.REF.SOURCES", "REF.SOURCES", PM_FPA_FILE_CMF);
+    if (!success) {
+        psError(PS_ERR_IO, false, "Failed to build FPA from PPSUB.REF.SOURCES");
+        return false;
+    }
 
     // Now that the camera has been determined, we can read the recipe