Why Uninstall, Disable buttons are hidden in Module Loader?

I have obtained a copy of the files and database of the crm and I have configured it on my localhost. everything is working fine but when try to uninstall or diisalbe a module which is already installed in the module loader , I cant see any buttons there.
Why is that?

File permissions stuffs are OK


You probably don’t have the file in the upload folder…