CMS CMS is giving blank white page

[محروم.كوم]

i just upgraded to vb4.01 from vb3.8.2 and found that cmd isnt working.

www.****.net/forum/content.php shows just a blank white page. i do not any other plugin than blog and ams. and using default skin. i checked error log of my host and found this.

PHP Fatal error: Call to a member function query_first() on a non-object in /hsphere/local/home/***/****/forum/packages/vbcms/controller/content.php(84) : eval()'d code on line 2



i reuploaded this file. but no solution.
__DEFINE_LIKE_SHARE__