------------- EXCEPTION: Bio::Root::Exception -------------
MSG: swissprot stream with no ID. Not swissprot in my book
STACK: Error::throw
STACK: Bio::Root::Root::throw /Library/Perl/5.8.6/Bio/Root/Root.pm:328
STACK: Bio::SeqIO::swiss::next_seq /Library/Perl/5.8.6/Bio/SeqIO/swiss.pm:179
STACK: Bio::DB::WebDBSeqI::get_Seq_by_id /Library/Perl/5.8.6/Bio/DB/WebDBSeqI.pm:159
STACK: Bio::Perl::get_sequence /Library/Perl/5.8.6/Bio/Perl.pm:511
STACK: tut1.pl:3