Index: /issm/trunk-jpl/src/m/archive/archread.m
===================================================================
--- /issm/trunk-jpl/src/m/archive/archread.m	(revision 23176)
+++ /issm/trunk-jpl/src/m/archive/archread.m	(revision 23177)
@@ -13,9 +13,10 @@
 	end
 
-	if ~exist(filename,'file')
+	%open file
+	fid=fopen(filename,'rb');
+	if fid==-1
 		error(['Error: File: ' filename ' does not exist.']);
 	end
 
-	fid=fopen(filename,'rb');
 	% Get structure of file
 	field_names={};