Add-on is disconnected when starting it automatic

Hallo everybody,

we've written an addon and an installer for SBO. When I start SBO after registering the addon the addon is installed and linked sucessfully. Now I can start the SBO from the addon Manager whithout problems. When I change the user preferences in the addon administrator to automatic and start DBO again, I get the system message "Add-on ... is disconnected". When I use the option "Restart Add-on" SBO tells me "Connecting Add-on", "linked to ..." and immediately the system message "Add-on ... is disconnected" appears again. Using the option "Continue working without this Add-on" and starting it manually from the Add-on Manager, works.

Has anybody any idea how to solve this problem?

Thanks for helping

Christoph Menken