Update for anyone having problems with:
"Fatal error: Call to undefined function: htmlheader()"
Open modlog.php
search for this line
PHP Code:
//echo "<table border=0 cellspacing=0 cellpadding=4 width=95%>";
and remove it.
Thats it, that fixed it for me... I think for some reason even tho it was commented out php was parsing the semicolon. Not sure exactly, but removing that line fixed the problem for me.
Hope this helps anyone else having the same problem