Installed Gravity Forms, love it. Use a redirect to a pdf file to allow visitors to download a file after filling in some information.
Later, I changed my Permalink settings in Wordpress from Default to Custom with
as the formatting choice.
/%category%/%postname%/
Now, the redirect from Gravity Forms does not work.
This topic was similar, but didn't propose a workaround and was using IIS.
http://forum.gravityhelp.com/topic/no-confirmation-being-displayed-and-no-mail-notification-or-entry-being-sent