--- cfmaps/cfmap2png	2009/10/22 03:02:00	1.27
+++ cfmaps/cfmap2png	2009/10/22 08:19:15	1.28
@@ -243,7 +243,7 @@
       utime +(stat "$file.map")[8,9], "$file.png~" or die "$file.png~: $!";
       rename "$file.png~", "$file.png";
       1
-   } or warn $@;
+   } or $stderr .= $@;
 
    if (length $stderr) {
       open my $fh, ">$file.png.err~"