Pesan error di Kubuntu/Ubuntu Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce"

Setiap saya menjalankan program thunderbird di console, saya selalu mendapat pesan error seperti ini:

Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce"

Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce"

Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce"

Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce"

Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce"

Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce" 

Gtk-WARNING **: Unable to locate theme engine in module_path: "xfce"

Saya coba melakukan Googling, cuman menemukan solusi pada Pesan error yang seperti ini:

 Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine"

Dan solusinya adalah menginstall paket deb bernama gtk-engine-murrine

Saya asumsikan, saya juga butuh engine gtk yang sama, maka di Konsole saya coba:

root@Asus-X201EV:~# apt-get install gtk-engine-xfce
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package gtk-engine-xfce
root@Asus-X201EV:~#

Ternyata gagal, saya coba search paket deb yang mirip di internet dengan nama yang sama , dan saya dapatkan gtk2-engines-xfce

Lalu saya install:

root@Asus-X201EV:~# apt-get install gtk2-engines-xfce
root@Asus-X201EV:~# apt-get install gtk2-engines-xfce
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Suggested packages:
  xfce4-panel
The following NEW packages will be installed:
  gtk2-engines-xfce
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 31,6 kB of archives.
After this operation, 373 kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  gtk2-engines-xfce
Authentication warning overridden.
Get:1 http://id.archive.ubuntu.com/ubuntu/ raring/universe gtk2-engines-xfce i386 3.0.1-1 [31,6 kB]
Fetched 31,6 kB in 1s (17,2 kB/s)            
Selecting previously unselected package gtk2-engines-xfce.
(Reading database ... 272364 files and directories currently installed.)
Unpacking gtk2-engines-xfce (from .../gtk2-engines-xfce_3.0.1-1_i386.deb) ...
Setting up gtk2-engines-xfce (3.0.1-1) ...
root@Asus-X201EV:~#

Dan Alhamdulillah, Pesan error tersebut hilang.


Semoga membantu.  ^_^