Resurrection Error

[IsMaR]

ok this is my problem...i got hide hack ressurrection and on forumdisplay.php im having problems because when i put tha code they tell me to put in and over write it...i go back to my fourm and a error message pops up sayin "Call to a member function on a non-object in functions_forums_display.php"...i went to the back to /includes/functions_forumdisplay.php and deleted the code that was in the hack and than over writed it and than i checked it again and it strated working again than i went back and re-entered the code and overwrited it and it went back to the error message so i think theres something wrong with the code

PS: can someon explain this to me cuz its confusin

For each of the pairs below, copy the file on the left from the archive package you have downloaded to the path you can see on the right.
Example: If you need to copy ./admincp/thehack.php to ./somefolder/thehack.php, it would mean that you need to copy a file, called thehack.php from the admincp subfolder of the package you have downloaded to the somefolder subdirectory of your forum engine.

* ./upload/*.* => ./*.*