Please note that Bio::ASN1::EntrezGene package version 1.091 is exactly the same as version 1.09 (the only difference being that this file only exists in version 1.091). The reason for releasing a version 1.091 is that CPAN indexing of Bio::ASN1::EntrezGene version 1.09 had some problem that is not yet fixed & I'd have to upload a package with different file name.