Sorry, but mayby its not clear. My problem was already solved.
I made a mistake with the version numbers
Usermanager is working now.

Thanx for al the reply's

Jan.

I think i find the answer

http://forum.mikrotik.com/viewtopic.php?f=1&t=61813

Hello, I'm new to routerbords. Just got a RB435G with i think OS 5.2 I read about os 5.7 ... 5.8 but can only download 5.16 at http://www.mikrotik.com/download.html When i try to install usermanager and reboot i get a system error cannot install user-manager-5.16 system-5.16 is not installed. see sc...