We are still using joomla 2.5. We haven't made any major changes to the site or any major updates. We did update jomsocial to a newer version because of the bugs it was having, but I wouldn't think it would cause that since they aren't interacting at that point. We also installed sh404sef for SEO, so I don't know if that would cause it or not.
The url it is trying to direct to is
www.fishjunkies.co/index.php/
So I don't know if it isn't directing to the actual hotspot url like it is supposed to, or if it normally directs towards the homepage.
Thanks,
Shaun