Installation problem

Still new to the world of web servers so maybe I'm missing something. I've uploaded everything to the shared webserver and set the permissions required. I've added a database, but I don't think it's getting to the point where that matters. When I go to run the install script I get this error: Fatal error: Call to undefined function user_company() in [...]current_user.inc on line 21. The odd thing is, when I open up current_user.inc, line 21 is defining the variable $user. It says nothing about the user_company function. Any help would be appreciated as I would love to give this software a try.