disk-manager crashed with IOError in copyfile()

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Binary package hint: disk-manager

i just started up the computer and got this error don't know the cause.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/disk-manager
InterpreterPath: /usr/bin/python2.5
NonfreeKernelModules: ath_hal nvidia
Package: disk-manager 1.0.1-2
PackageArchitecture: all
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/python2.5 -OOt /usr/bin/disk-manager --check
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/disk-manager', '--check']
SourcePackage: disk-manager
Title: disk-manager crashed with IOError in copyfile()
Uname: Linux 2.6.27-7-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare