[Plugin: WordPress Download Monitor] Sort order doesn't work

Here’s my shortcode that should cause an ASCending sort on the meta field called reference.

[downloads query=”limit=100&category=6&orderby=meta-reference&order=ASC” format=”2″]

Here’s format 2

<tr><td>{meta-reference}</td><td>{title}</td><td>{description}</td><td>{meta-venue}</td><td>{meta-speaker}</td><td>{meta-minutes}</td></tr>

In the output, a “reference” starting with R comes before a group that all start with G. The G group is in correct order.

http://wordpress.org/extend/plugins/download-monitor/