Index: /branches/eam_branches/ipp-20110213/psModules/src/objects/pmFootprintAssignPeaks.c
===================================================================
--- /branches/eam_branches/ipp-20110213/psModules/src/objects/pmFootprintAssignPeaks.c	(revision 30814)
+++ /branches/eam_branches/ipp-20110213/psModules/src/objects/pmFootprintAssignPeaks.c	(revision 30815)
@@ -46,10 +46,10 @@
      */
     psImage *ids = pmSetFootprintArrayIDs(footprints, true);
-    assert (ids != NULL);
-    assert (ids->type.type == PS_TYPE_S32);
-    const int row0 = ids->row0;
-    const int col0 = ids->col0;
-    const int numRows = ids->numRows;
-    const int numCols = ids->numCols;
+    if (ids) { assert (ids->type.type == PS_TYPE_S32); }
+    
+    const int row0 = ids ? ids->row0 : 0;
+    const int col0 = ids ? ids->col0 : 0;
+    const int numRows = ids ? ids->numRows : -1;
+    const int numCols = ids ? ids->numCols : -1;
 
     for (int i = 0; i < peaks->n; i++) {
@@ -58,6 +58,6 @@
 	const int y = peak->y - row0;
 	
-	assert (x >= 0 && x < numCols && y >= 0 && y < numRows);
-	int id = ids->data.S32[y][x - col0];
+	if (ids) { assert (x >= 0 && x < numCols && y >= 0 && y < numRows);}
+	int id = ids ? ids->data.S32[y][x - col0] : 0;
 
 	if (id == 0) {			// peak isn't in a footprint, so make one for it
Index: /branches/eam_branches/ipp-20110213/psModules/src/objects/pmFootprintIDs.c
===================================================================
--- /branches/eam_branches/ipp-20110213/psModules/src/objects/pmFootprintIDs.c	(revision 30814)
+++ /branches/eam_branches/ipp-20110213/psModules/src/objects/pmFootprintIDs.c	(revision 30815)
@@ -66,5 +66,6 @@
 
    if (footprints->n == 0) {
-       psError(PS_ERR_BAD_PARAMETER_SIZE, true, "You didn't provide any footprints");
+       // XXX this was an error, but is an allowed condition -- NULL returned image means no footprints for any peaks
+       // psError(PS_ERR_BAD_PARAMETER_SIZE, true, "You didn't provide any footprints");
        return NULL;
    }