package rt4-clients 4.0.4-2ubuntu0.1 failed to install/upgrade: trying to overwrite '/etc/request-tracker4', which is also in package request-tracker4 4.0.4-2ubuntu0.1

[max knorr]

request-tracker4 and request-tracker3.8 part installed, can't remove or install either !

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: rt4-clients 4.0.4-2ubuntu0.1
ProcVersionSignature: Ubuntu 3.2.0-23.31-lowlatency 3.2.14
Uname: Linux 3.2.0-23-lowlatency x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Fri Sep 21 09:54:16 2012
DpkgTerminalLog:
 Unpacking rt4-clients (from .../rt4-clients_4.0.4-2ubuntu0.1_all.deb) ...
 dpkg: error processing /var/cache/apt/archives/rt4-clients_4.0.4-2ubuntu0.1_all.deb (--unpack):
  trying to overwrite '/etc/request-tracker4', which is also in package request-tracker4 4.0.4-2ubuntu0.1
DuplicateSignature:
 Unpacking rt4-clients (from .../rt4-clients_4.0.4-2ubuntu0.1_all.deb) ...
 dpkg: error processing /var/cache/apt/archives/rt4-clients_4.0.4-2ubuntu0.1_all.deb (--unpack):
  trying to overwrite '/etc/request-tracker4', which is also in package request-tracker4 4.0.4-2ubuntu0.1
ErrorMessage: trying to overwrite '/etc/request-tracker4', which is also in package request-tracker4 4.0.4-2ubuntu0.1
InstallationMedia: Ubuntu-Studio 12.04 "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
SourcePackage: request-tracker4
Title: package rt4-clients 4.0.4-2ubuntu0.1 failed to install/upgrade: trying to overwrite '/etc/request-tracker4', which is also in package request-tracker4 4.0.4-2ubuntu0.1
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.request.tracker4.rt.conf: [deleted]