Well yes, that's aegis for you

You seem to be running your device in closed mode, and so a lot of normal unix operations like certain mode changes, process access modifications etc. are forbidden even when you are running as root as long as you do not have the correct access tokens

There are 3 possible solutions;

• flash an open mode kernel (that's my favourite solution)
• use inception to go around the limitations
• have your application installer approved by Nokia so you get the access tokens