I seem to do something wrong in my component, as it triggers an error "Unhandled exception : Service duplicated" when shutting down foobar. Any idea what might cause this? My component basically just reports some information about the currently playing song and introduces a new configuration page with a few options. I probably just forgot to unregister something, but I do not know what.

Thanks.

There are two possible causes for this error:

• You are reimplementing a core services that is not meant to be reimplemented. In this case it would be unlikely the error is only triggered at shutdown.
• You are using static_api_ptr_t<T> with a service T that has multiple factories by design.

Thanks, the second seems to be the case. I'm using

• static_api_ptr_t<playlist_manager>
• static_api_ptr_t<play_callback_manager>
• static_api_ptr_t<playback_control>
• static_api_ptr_t<user_interface>
• static_api_ptr_t<metadb_io_v2>

I'm properly unregistering the callback. Any idea which of these might be causing the issue and how to resolve it?

This is incorrect. user_interface is implemented to create your own UI module.

Use static_api_ptr_t<ui_control> to interact with the active user interface.

Please do also note that several methods should not be called from global callbacks:

Thanks a lot. The reason why I was using user_interface was that is has a shutdown() method. What is the proper way to shutdown foobar then, as ui_control has no shutdown() method?

I just found standard_commands::main_exit() which seems to work fine.