I just updated the plugin to version 2.0 in my WP 3.5 installation. And it didn't work. After activating the plugin I only get a white page in the admin backend where the dashboard should be. So the download counter plugin broke everything and the admin backend is unuseable now. Just for your information.
Uncaught Error: Syntax error, unrecognized expression: 'a[href$=".pdf"],a[href$=".doc"],a[href$=".xls"],a[href$=".docx"],a[href$=".xlsx"],a[href$=".csv"]'
in load-scripts.php line 2