Banshee from ports problem

Hi, I hope this is the right place to put this question.

I'm quite new to FreeBSD and I'm using FreeBSD 11.0 with Gnome 3.
I have updated my system with portupgrade -rac. Then I updated ports with portsnap(8). I built Banshee from ports and everything appears ok, but when I try to run Banshee it opens a few time and then closes.

I have googled it, but no answers.

Any idea?

Remember that I'm very new to FreeBSD.

Thanks in advance
Does Gnome Terminal or xterm work? Try starting it from there, it may provide some error messages.
Normally before doing further research, I recommend reading the Handbook regarding GNOME
You should follow these instruction for most gtk based applications, for example Firefox won't work without dbus and proc. In short:
  1. start dbus and hald during startup using the following entries in /etc/rc.conf
  2. mount some special file systems in the /etc/fstab
    proc   /proc   procfs   rw  0  0
I would recommend mounting fdescfs(5) as well (if bash or Java are installed, it is necessary anyway), just add
fdesc  /dev/fd   fdescfs  rw 0 0

to your fstab. If you have done so, proceed with the advice of SirDice and start banshee from a terminal an post the error messages here.