absolute newbie

[pinkzomo]

I installed gnutella with apt-get from console. When I start it, I just get that:

$ gtk-gnutella 
16-03-12 16:53:54 (INFO): gtk-gnutella/1.0.1 (2013-12-31; GTK2; Linux x86_64)
16-03-12 16:53:54 (INFO): using native malloc()
16-03-12 16:53:54 (INFO): benchmarking sort routines to select the best one...
16-03-12 16:53:54 (INFO): vsort() will use qsort() for large arrays
16-03-12 16:53:54 (INFO): vsort_almost() will use smsort() for large arrays
16-03-12 16:53:54 (INFO): vsort() will use qsort() for small arrays
16-03-12 16:53:55 (INFO): vsort_almost() will use xqsort() for small arrays
16-03-12 16:53:55 (INFO): vsort() benchmarking took 1.21589 secs
16-03-12 16:53:55 (INFO): INPUTEVT using customized I/O dispatching with epoll()
16-03-12 16:53:55 (INFO): language code: "en"
16-03-12 16:53:55 (INFO): using locale character set "UTF-8"
16-03-12 16:53:55 (INFO): primary filename character set "UTF-8"
16-03-12 16:53:55 (MESSAGE): D-BUS set up and ready for use.
16-03-12 16:53:55 (WARNING): GtkSpinButton: setting an adjustment with non-zero page size is deprecated
16-03-12 16:53:55 (WARNING): GtkSpinButton: setting an adjustment with non-zero page size is deprecated
16-03-12 16:53:55 (WARNING): GtkSpinButton: setting an adjustment with non-zero page size is deprecated
16-03-12 16:53:55 (WARNING): GtkSpinButton: setting an adjustment with non-zero page size is deprecated
16-03-12 16:53:55 (WARNING): GtkSpinButton: setting an adjustment with non-zero page size is deprecated
16-03-12 16:53:55 (WARNING): restarting after abnormal termination (pid was 3639)

there is no window, no GUI, just nothing.