Not able to launch pidgin after upgrading to 11.10

[jijoy]

(Pidgin:3910): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(Pidgin:3910): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(Pidgin:3910): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(Pidgin:3910): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: pidgin 1:2.10.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4
Uname: Linux 3.0.0-12-generic-pae i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Sun Oct 23 18:55:42 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pidgin
UpgradeStatus: Upgraded to oneiric on 2011-10-20 (3 days ago)

[AndrewR (andrew-awrsolutions)]

I think that warning message is unrelated. I've seen that while launching other GTK applications.

Can you try killing the Pidgin process (right click on the Unity launcher and choose Quit, or run a `killall pidgin`) then try restarting it again. I think this bug is a duplicate of 879950 and 879960.