Index: /issm/trunk-jpl/src/m/extrusion/DepthAverage.m
===================================================================
--- /issm/trunk-jpl/src/m/extrusion/DepthAverage.m	(revision 17509)
+++ /issm/trunk-jpl/src/m/extrusion/DepthAverage.m	(revision 17510)
@@ -9,5 +9,5 @@
 
 %check that the model given in input is 3d
-if ~md.mesh.dimension==3;
+if ~strcmp(md.mesh.meshtype,'3D');
 	error('DepthAverage error message: the model given in input must be 3d')
 end
Index: /issm/trunk-jpl/src/m/extrusion/project2d.m
===================================================================
--- /issm/trunk-jpl/src/m/extrusion/project2d.m	(revision 17509)
+++ /issm/trunk-jpl/src/m/extrusion/project2d.m	(revision 17510)
@@ -20,5 +20,5 @@
 end
 
-if (md3d.mesh.dimension~=3),
+if ~strcmp(md3d.mesh.meshtype,'3D');
 	error('wrong model type ... should be ''3d''');
 end