problem with installing the product

i got problems whith installing
the product with 3.5.4

error:

Fatal error: Cannot redeclare check_rulesneeded() (previously declared in /home/mrcool/public_html/forums/global.php(503) : eval()'d code:85) in /home/mrcool/public_html/forums/global.php(503) : eval()'d code on line 756

[CMX_CMGSCCC]

check_rulesneeded

This file is not even part of vBulletin, sounds like a plugin you have enabled is conflicting somewhere.

-CMX

[futureye]

how plz

can you help

[CMX_CMGSCCC]

Please list all of the plugins/products u have installed.

-CMX