Index: ../trunk-jpl/src/c/classes/Loads/Friction.cpp
===================================================================
--- ../trunk-jpl/src/c/classes/Loads/Friction.cpp	(revision 18990)
+++ ../trunk-jpl/src/c/classes/Loads/Friction.cpp	(revision 18991)
@@ -194,6 +194,7 @@
 
 	/*Check to prevent dividing by zero if vmag==0*/
 	if(vmag==0.) alpha2=0.;
+	else if (Neff==0) alpha2=0.0;
 	else alpha2= Neff * C_param * pow((Chi/(1 + alpha * pow(Chi,q_exp))),1/n) * 1/vmag;
 	_assert_(!xIsNan<IssmDouble>(alpha2));
 	/*Assign output pointers:*/
