Bug#247444: xlibmesa-gl: fails to install (dpkg error)

[ben <ben@gouarec.com>]

Package: xlibmesa-gl
Version: 4.3.0.dfsg.1-1
Severity: important

dpkg error when installing the package :

Setting up xlibmesa-gl (4.3.0.dfsg.1-1) ...
dpkg (subprocess): unable to execute post-installation script: Exec format error
dpkg: error processing xlibmesa-gl (--configure):
 subprocess post-installation script returned error exit status 2

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.3
Locale: LANG=C, LC_CTYPE=en_US.UTF-8

Versions of packages xlibmesa-gl depends on:
ii  libc6                     2.3.2.ds1-12   GNU C Library: Shared libraries an
ii  libxext6                  4.3.0.dfsg.1-1 X Window System miscellaneous exte
ii  xlibs                     4.3.0.dfsg.1-1 X Window System client libraries m

-- no debconf information