Potential caching issue

It's always possible. We'll be testing further shortly, but yeah, test from a few accounts and see if it's specific to one account.

Also, what SEF extension are you using on your site? If possible (depends on the extension), can you disable SEF rewriting for just JFBConnect? If not, let us know what you're using, and we'll let you know if there are any known fixes for it.

Thanks for your patience,
Alex

Mark,
You will only get the permissions request dialog box the first time you connect to your site. Once it's approved (one-time only), you shouldn't get the request dialog again since you've already approved it. After that, on subsequent logins, since you've already given permission, JFBConnect should automatically import your user profile without any interaction required from the user (other than hitting "Login with Facebook").

Hope this helps explain a little more. I can't tell from your first paragraph if you're still seeing the pop-up remaining. If so, let us know, and we'll keep investigating the issue there. We test constantly in Chrome though, and haven't seen that issue on your site, or others, but that of course doesn't mean it's not happening.. strange things happen on sites all the time

Mark,
Yup, I was wrong. I think I tested on a different site yesterday. I just created an account on your site, and when I log in, I can see the 500 error. I've seen this before on a few other sites, and it's usually either a security issue where a firewall or other 'protection suite' is preventing the long URL that Facebook returns from being parsed and used on the site. The other option is that your Advanced SEF (which we're not as familiar with) is not liking the long URL.

If possible, can you elevate our account "sourcecoast" to super admin and we can investigate further. I'll install extPlorer, a file manager, to let us make some minor modifications to JFBConnect for testing purposes, and hopefully find the problem. If you have a development server to test on, that's always where we'd prefer to start.

Thanks for your patience, and we'll get you setup