Index: /trunk/psconfig/psbuild
===================================================================
--- /trunk/psconfig/psbuild	(revision 13911)
+++ /trunk/psconfig/psbuild	(revision 13912)
@@ -57,7 +57,11 @@
 @ARGV = @tARGV;
 
-if ( @ARGV != 1) { &usage (); }
-
-$distribution = $ARGV[0];
+if ( @ARGV == 0) { 
+    @list = <$tagsets/*.dist>;
+    $distribution = $list[-1];
+} else {
+    $distribution = "$tagsets/$ARGV[0].dist";
+}
+
 &load_distfile ();
 
@@ -202,6 +206,5 @@
     # open and read the distribution file
     # results go into @cvsname, @branchtag, @branchver, @mode
-    $file = "$tagsets/$ARGV[0].dist";
-    open (FILE, $file) || die "ERROR: can't open distribution file $file\n";
+    open (FILE, $distribution) || die "ERROR: can't open distribution file $distribution\n";
     @list = <FILE>;
     close (FILE);