package ircd-ircu (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

I cannot install.

ProblemType: Package
DistroRelease: Ubuntu 12.10
Package: ircd-ircu (not installed)
ProcVersionSignature: Ubuntu 3.5.0-25.39-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic i686
ApportVersion: 2.6.1-0ubuntu10
AptOrdering:
 ircd-ircu: Install
 ircd-ircu: Configure
Architecture: i386
Date: Sun Mar 17 18:16:48 2013
DpkgTerminalLog:
 Unpacking ircd-ircu (from .../ircd-ircu_2.10.12.10.dfsg1-1_i386.deb) ...
 hangovers of old ircd found, saving them in /etc/ircd/bak: cp: no se puede crear el fichero regular «/etc/ircd/bak//bak/ircd.motd.bak.bak»: No existe el archivo o el directorio
 dpkg: error processing /var/cache/apt/archives/ircd-ircu_2.10.12.10.dfsg1-1_i386.deb (--unpack):
  subprocess new pre-installation script returned error exit status 1
DuplicateSignature:
 Unpacking ircd-ircu (from .../ircd-ircu_2.10.12.10.dfsg1-1_i386.deb) ...
 hangovers of old ircd found, saving them in /etc/ircd/bak: cp: no se puede crear el fichero regular «/etc/ircd/bak//bak/ircd.motd.bak.bak»: No existe el archivo o el directorio
 dpkg: error processing /var/cache/apt/archives/ircd-ircu_2.10.12.10.dfsg1-1_i386.deb (--unpack):
  subprocess new pre-installation script returned error exit status 1
ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationDate: Installed on 2013-03-16 (1 days ago)
InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.1)
MarkForUpload: True
SourcePackage: ircd-ircu
Title: package ircd-ircu (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.ircd.ircd.conf: 2013-03-17T18:05:32.440589