That code, I'm assuming, is from what of Facebook's own Javascript files. It's definitely not from any code that we've generated. We can gladly help investigate further, but I'm not sure there's much we could do to fix that problem as it'd have to be reported to Facebook.
Can you let me know a page where we can see that error thrown on? That will help us investigate, but again, I wouldn't expect a solution from us.
Thanks,
Alex