Hello Harald,
The original design was to simply use the bundle id without any path, no matter where the plugin came from (NSF based or file system).
So if you want to start plugin com.acme.myplugin the system is:
in xml profile:
<startPlugin id="com.ibm.nsfbased.tasklet"/> or <startPlugin id="com.ibm.nsfbased.tasklet@4"/> to start the plugin with a particular level.
in configuration database, simply type plugin name in the "List of plugins to automatically start".
I tested it again this way and it seems to be working. Please let me know if you are experiencing problems.
Thanks
-david