wp-better security vbulletin forum feature conflict

Hi there support,

I am using your plugin for long time, and i am quite satisfied, because with combining htaccess restriction and cloudflare, i have minimised attacks on my blog.

But before 2 month i have installed a vbulletin forum along my wordpress website, where wordpress is installed in http://www.website.com, and vbulletin in http://www.website.com/forum.

A few functions of vbulletin forum are not showing, when i click on some features in my admin panel for vbulletin, instead of vbulletin inline frame, i get WordPress error file not found.

Can u please help me, what should i do to make it show my vbulletin options. Does it have anything with my htaccess file.

http://wordpress.org/extend/plugins/better-wp-security/