Index: /issm/trunk/src/m/classes/public/WriteData.m
===================================================================
--- /issm/trunk/src/m/classes/public/WriteData.m	(revision 211)
+++ /issm/trunk/src/m/classes/public/WriteData.m	(revision 212)
@@ -21,4 +21,8 @@
 elseif strcmpi(data_type,'Mat'),
 	s=size(data);
+	if(isnan(data),
+		s(1)=0;
+		s(2)=0;
+	end
 	
 	%first write length of record