[Typo3-dev] Extension only works, when logged into backend

[Jeppe Stampe]

Hey list..

I've made an extension, which creates a list of frontend users from a 
selected group. It is my first extension ever, so i'm not sure about the 
use of the build-in typo3 functions and other things.

My problem is, that extension only works, when i'm logged into the 
backend. I discovered the problem pretty late in the process, because i 
was logged into the backend all the time..

I have no idea what causes this problem?

The source is availible here: http://jstampe.dk/extension_source.phps
The comments is in Danish, but i hope you'll figure it out.

I could use any comment on my extension, cause i'm very new to typo3 
development..


Jeppe