[Plugin: WordPress HTTPS (SSL)] Dashboard doesn't work

I have a wordpress multisite setup running. When I activate the plugin for an individual site, I can no longer access the dashboard for that site. I tried the instructions for uncommenting out define(‘WPHTTPS_RESET’, true); but that didn’t help the problem. When I try to login to the dashboard, my browser spins for a while before complaining of a redirect loop. Tried in Chrome, Safari, and firefox. Example : “too many redirects occurred trying to open “http://www.hostmerchantservices.com/wp-admin/edit.php”. This might occur if you open a page that is redirected to open another page which then is redirected to open the original page.

any ideas?

http://wordpress.org/extend/plugins/wordpress-https/