Index: /issm/trunk-jpl/src/m/boundaryconditions/SetMarineIceSheetBC.py
===================================================================
--- /issm/trunk-jpl/src/m/boundaryconditions/SetMarineIceSheetBC.py	(revision 15994)
+++ /issm/trunk-jpl/src/m/boundaryconditions/SetMarineIceSheetBC.py	(revision 15995)
@@ -27,10 +27,12 @@
 		if not os.path.exists(icefrontfile):
 			raise IOError("SetMarineIceSheetBC error message: ice front file '%s' not found." % icefrontfile)
-		[nodeinsideicefront,dum]=ContourToMesh(md.mesh.elements,md.mesh.x,md.mesh.y,icefrontfile,'node',2)
-		vertexonicefront=numpy.logical_and(md.mesh.vertexonboundary,nodeinsideicefront.reshape(-1))
+		[incontour,dum]=ContourToMesh(md.mesh.elements,md.mesh.x,md.mesh.y,icefrontfile,'node',2)
+		vertexonicefront=numpy.logical_and(md.mesh.vertexonboundary,incontour.reshape(-1))
 	else:
 		#Guess where the ice front is
-		vertexonfloatingice=numpy.logical(md.mask.groundedice_levelset<0.)
-		vertexonicefront=numpy.logical_and(md.mesh.vertexonboundary,vertexonfloatingice)
+		vertexonfloatingice=numpy.zeros((md.mesh.numberofvertices,1))
+		pos=numpy.nonzero(numpy.sum(md.mask.groundedice_levelset[md.mesh.elements-1]<0.,axis=1) >0.)[0]
+		vertexonfloatingice[md.mesh.elements[pos].astype(int)-1]=1.
+		vertexonicefront=numpy.logical_and(numpy.reshape(md.mesh.vertexonboundary,(-1,1)),vertexonfloatingice>0.)
 
 #	pos=find(md.mesh.vertexonboundary & ~vertexonicefront);