Index: /issm/trunk-jpl/src/m/classes/model.py
===================================================================
--- /issm/trunk-jpl/src/m/classes/model.py	(revision 22052)
+++ /issm/trunk-jpl/src/m/classes/model.py	(revision 22053)
@@ -704,5 +704,6 @@
 		if hasattr(md.friction,'C'): md.friction.C=project2d(md,md.friction.C,1)
 		if hasattr(md.friction,'As'): md.friction.As=project2d(md,md.friction.As,1)
-		if hasattr(md.friction,'effective_pressure'): md.friction.effective_pressure=project2d(md,md.friction.effective_pressure,1)
+		if hasattr(md.friction,'effective_pressure') and not np.isnan(md.friction.effective_pressure).all():
+                    md.friction.effective_pressure=project2d(md,md.friction.effective_pressure,1)
 		if hasattr(md.friction,'water_layer'): md.friction.water_layer=project2d(md,md.friction.water_layer,1)
 		if hasattr(md.friction,'m'): md.friction.m=project2d(md,md.friction.m,1)