Sorry : having installed another version, I wasn't quoting the good file. It is line 217-218 : my $decode_cmd = "$CWB::SDecode"; $decode_cmd .= "-r '$Opt_Registry'" if $Opt_Registry; In the file cwb-align-encode contained in the archive "Perl-CWB-2.2.102.tar.gz" downloadable from the web site. Best, Sylvain Loiseau