[admin panel maintenance option missing]

So as it turns out all i had to do was clear my browser cache, to have the changes take effect.

[admin panel maintenance option missing]

i did change the permissions for admins but still can't full list of admin panel

also other problem which is ( add and edit fleet is missing too ) and when i go to the link admin/index.php/operations/aircraft i get this msg : Unauthorized access - Invalid Permissions.

​( i can go to maintenance option by link admin/index.php/maintenance/options )

Im am as well having this problem has any one found a fix ? i changed the _group permissions. But that still didnt anything neither did the line code someone posted later in the forum.. any help is appreciated