Index: /issm/trunk-jpl/src/m/classes/inversion.py
===================================================================
--- /issm/trunk-jpl/src/m/classes/inversion.py	(revision 21243)
+++ /issm/trunk-jpl/src/m/classes/inversion.py	(revision 21244)
@@ -108,5 +108,5 @@
 
 		#several responses can be used:
-		self.cost_functions=101
+		self.cost_functions=[101,]
 
 		#step_threshold is used to speed up control method. When