XFileSharing Pro - Error 500 on admin login

[Mach2Racer]

I get a green to go and when I log in I get an error 500 and this /<TMPL_VAR site_url>/ pops up in my address bar.. I looked in previous post I found one that was useful but no one elped him.
This seems like an awesome program I would like to get it up and running please..

[PilgrimX182]

PM me admim login/pass & FTP info if possible so I can fix is ASAP.