Hi magicke,
This plugin uses a library called HybridAuth and needs exactly matching PHP sessions to work. The problem is most likely related to PHP sessions and cache. I am creating a pull request on github to address PHP session-related issues.
What errors did you get? what plugin or plugins are you using to create the custom login page? More details will help to debug and address this issue.
Ugh, sorry VisualData, I posted this in the wrong plugin support page.
The problem I’m having is with the Nextend FB Connect plugin, which is a required plugin for a theme I’m customizing for a client.
Marked this as resolved.
Sorry!!!