JFBCInvite and JFBCLogin issue

Mike,
Step 1
For "I've used the redirect option setting after logging in", what setting specifically are you talking about? For Facebook login's, the redirection is completely configured in the JFBConnect component admin area in the "Login/Logout Redirections" tab. The JFBCLogin module only has a redirection setting for users that login with their Joomla credentials.

In the login redirections area, you'd want to disable the "New User" and "Returning User" login redirections. That will always leave the user on the current page, which in this case, would be the Invite page.

Step 2
I'll have to investigate, as some things have changed with how we should be checking if the user is logged into Facebook in JFBC v4.0. We didn't make any changes in JFBCInvite, and didn't think any were required, but it's possible we missed something. However, we're not seeing that issue when not logged into Facebook on our demo page:
www.sourcecoast.com/jfbconnect/demo/jfbcinvite-module

Could you check that link and see if you see issues? Also, if possible, can you post (or private message) us a link to the page with this issue?

Thanks,
Alex

Mike,
Not sure what you mean by "using the JFBConnect through JomSocial". The Facebook integration inside JomSocial should be disabled if you're using JFBConnect. For more information on proper integration between JomSocial and JFBConnect, if you haven't already see it, please check out:
Facebook Integration for JomSocial

You definitely shouldn't see the error message. The empty box can occur in a few circumstances, depending on whether the user is logged into Facebook or your site. The "Please log in.." message should show up if the user isn't logged in through Facebook to your site.

Later this year, we're planning to overhaul the Invite module as it's using an older system from Facebook. The newer system is finally up to snuff, and offers a bit more flexibility and bug-fixes.

Hope that helps,
Alex