Index: /issm/trunk-jpl/src/m/interp/averaging.py
===================================================================
--- /issm/trunk-jpl/src/m/interp/averaging.py	(revision 17921)
+++ /issm/trunk-jpl/src/m/interp/averaging.py	(revision 17922)
@@ -86,4 +86,5 @@
 		average_node=csc_matrix( (npy.tile(areas*average_el.reshape(-1),(rep,1)).reshape(-1,),(line,npy.zeros(linesize,))), shape=(numberofnodes,1))
 		average_node=average_node/weights
+		average_node=csc_matrix(average_node)
 	
 	#return output as a full matrix (C code do not like sparse matrices)