I'm getting the following error in the "Blog to Forum Cross Posting" box when editing a post:
Notice: Undefined variable: topicURL in /var/www/bbm/mydomain.comhtdocs/wp-content/plugins/wpforo-cross-posting/wpForoCrossPosting.php on line 102
In reviewing the code it looks like the bug is because this post existed prior to the installation of WpForo and so when it calls `get_meta` to set `$topicID` it gets set to blank. Then the `if($topicID)` on line 101 fails and `$topicURL` never gets set.
A possible fix would be to change the `if ($topicID)` statement on line 102 to `if ( !empty($topicID) )`
