FBU Log Error (that's not enough detail guys?)

Sorry about the topic heading. Apparently your system wouldn't let me post "FBU Log Error"

Moving on...

This seems to be a fairly persistent error in FBU

/path_to_file/wp-content/plugins/wpmu-dev-facebook/lib/class_wdfb_metabox.php on line 164

It's a silent fail and it's been around for a while. I'm just wondering if it's a configuration issue or a plugin issue. I'd rather not have it write to my error logs.