slideshow module wont work

Hello

I dont how it happens

but now i cant edit the slideshow module

if i click (edit) beside it in the modules list

it redirects me to

http://isupply-ksa.com/admin/index.php? ... a93a0731f1

with this message displayed on the page

The page you are looking for could not be found! Please contact your administrator if the problem persists.

an image is attached

see if admin/controller/module/slideshow.php is missing.

You get the error when you are trying to access a module page that has no controller

xyph3r

thank you for response

I checked , it exists there , the error still

an image is attached

and ideas?

thanks