Upgraded and got a Fatal error

[Tristan Perry]

Hi! I uploaded everything fine and upgraded it fine. When I then went to the homepage I got this error:

Fatal error: Cannot redeclare checksession() (previously declared in /home/yxdvfheq/public_html/forums/Sources/Subs.php:1253) in /home/yxdvfheq/public_html/forums/Sources/Security.php on line 360

Any help? My members will be wondering whats going on!
   Thanks

[[Unknown]]

It looks like you've only uploaded some of the files.  Subs.php, notably, is still old (YaBB SE) not SMF.

-[Unknown]

[Tristan Perry]

It looks like you've only uploaded some of the files.  Subs.php, notably, is still old (YaBB SE) not SMF.

-[Unknown]

So it is! Thanks! I re-uploaded the sources folder and it worked!
   Thanks