If you cannot access a website properly in Internet Explorer 9, Press ALT + T to open the Tools menu. You will find the Compatibility Settings option in the menu. Add this site to the list and Internet Explorer will switch to compatibility mode automatically every time you access the site.

If the steps above do not resolve the issue, please create a support request at www.blackbaud.com/support providing the details of the issue, steps taken, and referencing this solution.