I guess I am not understanding. Here is what I have in a text/html so there is no option to choose a template unless I did the shortcode incorrectly.
[wpdm_all_packages items_per_page="20" categories="financial, meeting-minutes" jstable=1 order_by="Categories" order="ASC/DESC" cols="title,file_count,download_count|categories|update_date|download_link,file_size" colheads="Title|Categories|Update Date|Download"]
File_Size is not working either.