[totaltec]

This stuff is a pet peeve of mine. I've lost too many hours of my life screwing with issues like these. I'd check in auth.php or init.php and see if those include references to cdseo. Try commenting out any references you find. Might cause the site to throw an error, but at leadt you would be on the right track. Also reference the install instructions for clues on where it is initialized.

Another solution is to recursively search through the files for references.