Index: /issm/trunk-jpl/src/m/classes/organizer.m
===================================================================
--- /issm/trunk-jpl/src/m/classes/organizer.m	(revision 20129)
+++ /issm/trunk-jpl/src/m/classes/organizer.m	(revision 20130)
@@ -223,5 +223,5 @@
 
 			%check that md is a model
-			if ~isa(md,'model'), warning('second argument is not a model'); end
+			if ~isa(md,'model') & ~isa(md,'sealevelmodel'), warning('second argument is not a model'); end
 			if (org.currentstep>length(org.steps)), error(['organizer error message: element with id ' num2str(org.currentstep) ' not found']); end