I'm trying to get my XOOPS site back up and working after my hosting company had a server crash. I have everything restored, but they changed the names of everything! By this I mean, I have a new root path and a new database name. I have changed these in mainfile.php. I am getting the following messsage:

Fatal error: Call to undefined function: xoops_header() in /home/mthieme/public_html/header.php on line 23

I don't know if my problem is still in mainfile.php, header.php, or someplace else. Can anyone point me in the right direction?

Thanks, Mike