> Versions: > <code> > Perl version v5.10.0 > BioPerl 1.2.3 > </code> > > <p> > How do I correctly pass an option?<br> > Any help is greatly appreciated! > </p> Upgrade your version of BioPerl. Version 1.2.3 is ancient. Current version is 1.6.1. http://www.bioperl.org/wiki/Category:Installation