Index: /issm/trunk/src/c/shared/Elements/Paterson.cpp
===================================================================
--- /issm/trunk/src/c/shared/Elements/Paterson.cpp	(revision 6965)
+++ /issm/trunk/src/c/shared/Elements/Paterson.cpp	(revision 6966)
@@ -63,4 +63,7 @@
 	}
 
+	/*B cannot be negative!*/
+	if(B<0) B=pow((double)10,(double)6);
+
 	return B;
 }