The Easy Sign Up Plugin has been developed to work in the upcoming major WordPress update from 3.1 to 3.2.
In this update WordPress is dropping support for IE6 and deprecating support for IE7. If you’re using either and can’t upgrade for some reason I suggest using Google Chrome when you work on WordPress.
WordPress is also moving to php v5.1 and MySQL version 5.0.15, if you don’t know what your site is running on you can download my plugin ” Is Your Server Ready for WordPress 3.2 “.
You can install it directly via your WordPress Install Plugins by searching for “wordpress requirements”.