DataMapper ORM v1.8.0

[eluser]mrtopher[/eluser]
Well at least I know what the problem is. On my primary server the related_field parameter "category" is not getting to the library. It's coming through on my development server but not getting there on my primary server. Only difference is my dev server is running PHP 5.2.14 and my production server is running 5.3.5.

Anyone have any ideas what could be causing PHP 5.3.5 to mess (or strip completely) with parameters I'm passing to class methods?