thickbox and URI problem

[eluser]satanrulehis[/eluser]
Hello guru!
I build a website using CodeIgniter, In admin section I use Jquery Thickbox for some ajax works...
In my localhost everything works fine BUT when I upload to client's hosting --> error occur

"The URI you submitted has disallowed characters." --> a blank thickbox appears and stuck

The link

Code:

<a class="thickbox" href="http://domain.com/admin/adminpage/cpanel/show_menu_detail/9?height=130&width=600&modal=true" style="color: rgb(255, 102, 0); cursor: pointer;">EDIT CATEGORY</a>

Please view attached file for more detail

Thanks for any helps
Best regards,