In case streamtuner2 doesn't start up correctly, you can run it in a "debug mode". This could be set permanently via F12 in the Configuration window, in the "System" tab, as "x Enable debug messages".

Now when streamtuner2 hangs at startup, you can use the command-line flag:

1. Open a console / terminal window

2. Enter following command:

   streamtuner2 -D
   

   And press Enter.

3. Watch the output for red error messages.

Disable a single plugin (once).

If it's just a single channel plugin that hangs at startp, you could disable that:

streamtuner2 -d xiph

To make that permanent open the configuration and press save.