Coldfusion 7.0 ear package running on websphere application server 6.1

[selim]

I try to run a coldfusion ear package on a webspehere 6.1 application server. It all seems to install correct but when I try to open the specific url I get this error:

Error 500: The Security service is not available.

Does anyone know what is to be done here to get this ear file working.
This ear file contains the complete coldfusion module as it seems and just a small simple script for testing reasons but it won't work.
If anybody can help me with this it would be great.