Can't call method "desiredCompressionLevel" on an undefined value at /home/fds/lang/perl/fdsPerl-20100809/lib/site_perl/5.12.1/Archive/Zip/Archive.pm line 249.
 at /home/fds/lang/perl/fdsPerl-20100809/lib/site_perl/5.12.1/Archive/Zip/Archive.pm line 249
        Archive::Zip::Archive::addFile('Archive::Zip::Archive=HASH(0x149ff318)', 'vm.don') called at ve.pl line 75