functions and other prob!

I AM USEING vBulletin Version 3.8.4 when i install this /includes/functions_forumdisplay.php, step my forums showing like this !! My forum is legal version we are not using any type of illegal scripts.

i need another help too how can i do this step
Please ensure that you have downloaded an "uncompressed javascript" version of vbulletin.

/clientscript/vbulletin_textedit.js

Call to a member function set_thankscache() on a non-object in /home/XXXXX/public_html/forums/includes/functions_forumdisplay.php on line 181



can you tell me how can i fix this prob ? i paid money for this script ! i hope you will fix asap!

Please ensure that you have downloaded an "uncompressed javascript" version of vbulletin.

Go to vbulletin.com and choose to download the uncompressed javascript version from the "more options" screen.

Call to a member function set_thankscache() on a non-object in /home/XXXXX/public_html/forums/includes/functions_forumdisplay.php on line 181

Please install the hack using the instructions from the readme.html file. Please perform all instructions in the order that they appear in readme.html.