I get ActionMailer::TemplateError (controller_path) from using render :partial => 'item_list' I've also tried manipulating the @template and the template_root variable in ActionMailer for placing templates in a sub folder, but that does not work either. It never looks in the place I tell it to. Try it.
If anyone knows how to get either of those working, please let me know.
I saw someone filed a bug for the partials, but apparently they marked it resolved for 1.2.2 and I'm on 1.2.3.
For now I have removed the partials (copied them into all templates, ugh) and using tm as a prefix to the template instead of subfolder.
Thanks everyone. Hopefully someone can shed some light on it for me.