Index: /issm/trunk-jpl/test/NightlyRun/runme.py
===================================================================
--- /issm/trunk-jpl/test/NightlyRun/runme.py	(revision 21835)
+++ /issm/trunk-jpl/test/NightlyRun/runme.py	(revision 21836)
@@ -183,5 +183,5 @@
 							raise NameError("Field name '"+archive_name+'_field'+str(k+1)+"' does not exist in archive file.")
 						error_diff=np.amax(np.abs(archive-field),axis=0)/(np.amax(np.abs(archive),axis=0)+float_info.epsilon)
-                                                error_diff=error_diff[0]
+                                                if not np.isscalar(error_diff): error_diff=error_diff[0]
 
 						#disp test result