Index: trunk/ppSub/src/ppSubFiles.c
===================================================================
--- trunk/ppSub/src/ppSubFiles.c	(revision 26899)
+++ trunk/ppSub/src/ppSubFiles.c	(revision 27094)
@@ -183,4 +183,41 @@
     }
 
+    psFree(view);
+
+    // Disable writing of data now that we've written things out
+    if (files & PPSUB_FILES_CONV) {
+        pmFPAview *view = ppSubViewReadout(); // View to readout
+        {
+            pmReadout *ro = pmFPAfileThisReadout(config->files, view, "PPSUB.INPUT.CONV");
+            if (ro) {
+                ro->data_exists = ro->parent->data_exists = ro->parent->parent->data_exists = false;
+            }
+        }
+        {
+            pmReadout *ro = pmFPAfileThisReadout(config->files, view, "PPSUB.REF.CONV");
+            if (ro) {
+                ro->data_exists = ro->parent->data_exists = ro->parent->parent->data_exists = false;
+            }
+        }
+        psFree(view);
+    }
+    if (files & PPSUB_FILES_SUB) {
+        pmFPAview *view = ppSubViewReadout(); // View to readout
+        pmReadout *ro = pmFPAfileThisReadout(config->files, view, "PPSUB.OUTPUT");
+        if (ro) {
+            ro->data_exists = ro->parent->data_exists = ro->parent->parent->data_exists = false;
+        }
+        psFree(view);
+    }
+    // Disable writing of data now that we've written things out
+    if (files & PPSUB_FILES_INV) {
+        pmFPAview *view = ppSubViewReadout(); // View to readout
+        pmReadout *ro = pmFPAfileThisReadout(config->files, view, "PPSUB.INVERSE");
+        if (ro) {
+            ro->data_exists = ro->parent->data_exists = ro->parent->parent->data_exists = false;
+        }
+        psFree(view);
+    }
+
     ppSubFilesActivate(config, PPSUB_FILES_ALL, false);