urgent: Not able to access modules from admin tab

[abhijkum]

I am using prestashop 1.4.7 version.

Not able to access modules tab..

Can somebody help me over here..

I am able to reach module tab however when i click on any group of modules say billing, others or front office features..I get redirected to 404 page to my website..

 

http://demandgyan.com/bloomscart147/dev/modgo_front_office_features

 

the URL comes like above.

 

Please help.

 

Regards,

Abhijeet