When this plugin is active Link fails to link a user to an entry. The reason is the plugin removes the wp_login action that is required to trigger the linking.
There is a fix, but it requires editing the plugin. The instructions follow:
Open this file and go to line 639:
You’ll find this:
// s2Member login fix remove_all_actions('wp_login');
This just might fix an issue with S2member, but it also will remove the action Link requires to run on the wp_login hook.
If you do not have s2member installed, try commenting it out like so:
// s2Member login fix // remove_all_actions('wp_login');
NOTE: This FAQ was written based on CalPress 22.214.171.124