Index: trunk/ppStack/src/ppStackFiles.c
===================================================================
--- trunk/ppStack/src/ppStackFiles.c	(revision 31158)
+++ trunk/ppStack/src/ppStackFiles.c	(revision 34800)
@@ -14,4 +14,14 @@
 /// Files required for the convolution
 static char *filesConvolve[] = { "PPSTACK.INPUT", "PPSTACK.INPUT.MASK", "PPSTACK.INPUT.VARIANCE", NULL };
+
+/// Files required for the background
+static char *filesBkg[] = { "PPSTACK.INPUT.BKGMODEL", NULL };
+
+/// Files required for median only stacking
+static char *filesMedianIn[] =  { "PPSTACK.INPUT",                              			     
+                              NULL };
+/// Files required for median only stacking
+static char *filesMedianOut[] =  { "PPSTACK.OUTPUT",                              			     
+                              NULL };
 
 /// Regular (convolved) stack files
@@ -19,4 +29,5 @@
                               "PPSTACK.OUTPUT.EXP", "PPSTACK.OUTPUT.EXPNUM", "PPSTACK.OUTPUT.EXPWT",
                               "PPSTACK.OUTPUT.JPEG1", "PPSTACK.OUTPUT.JPEG2",
+			      "PPSTACK.OUTPUT.BKGMODEL",
                               NULL };
 /// Unconvolved stack files
@@ -41,4 +52,7 @@
       case PPSTACK_FILES_UNCONV:   return filesUnconv;
       case PPSTACK_FILES_PHOT:     return filesPhot;
+    case PPSTACK_FILES_BKG:        return filesBkg;
+    case PPSTACK_FILES_MEDIAN_IN:        return filesMedianIn;
+    case PPSTACK_FILES_MEDIAN_OUT:        return filesMedianOut;
       default:
         psAbort("Unrecognised file list: %x", list);