FreakAuth light 1.1 released

[eluser]Unknown[/eluser]
Hello guys.
Well surely I am newbie here.

I had tried CI for a few days. Interested to MyFina which using FreakAuth in their project.
I had tried MyFina on MySQL and decide to use it as a stepping project for my projects.

I use MSSQL, and get this :
Fatal error: Call to a member function num_rows() on a non-object in D:\WEB\ROOT\codeigniter\applicationI\libraries\Db_session.php on line 198

When working on MySQL it's work fine. Why on MSSQL this problem occured?
Any suggestion?

Thanks for your help.