Media buttons disappearing

Hello.

My users has lost their media buttons. When I log in as admin, the button's there. But users does not have it. I have activated the image button as well but none of them show up.

I use a plugin to hide some admin menus (the one from this site) and I hid the media menu options. But i doubt that that's got anything to do with it. Even when enabling the media menu option, the media button on the new post page is missing.

Is there a setting where I can turn the media button on and off? If so, where can I find it?