Aron,
Sorry for the issue you ran into. That error is caused by a bug in the latest release that we'll be fixing soon. Right now, the filtering in the Usermap area isn't working properly and causes that error. If you log out of Joomla and log back in, then go directly to the JFBConnect -> Usermap area, it should work.
If you click the social network icons or using the Filter options to select a specific social network, that error will occur. If you'd like to implement a small code change, you can see what to do in
this post
. Otherwise, we'll be putting out a patch release over the next week to fix this and a few other minor issues.
Sorry again for the trouble, and keep us posted if you run into anything else or have any other questions.
Thanks,
Alex