package sabily-grub-artwork 1.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[abuahd]

Binary package hint: sabily-grub-artwork

just after finishing installation of this version.i watched this alert screen at the first reboot.this problem occured also and repeatedly while installing it on my toshiba laptop (satellite A665).---there is also a serious problem that is worth mentioning regarding operating 3D programs(not working completely with ati /amd or nVidia.
Hoping to receive remedial solutions in near future.lots of thanks for YOU for YOUY great efforts and for YOUR icredible support .May ALLAH THE ALMIGHTY help YOU and Always KEEP YOU on the straight PATH.
Best Wishes& always success

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: sabily-grub-artwork 1.2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Thu May 5 14:57:59 2011
Dependencies:

Df:

ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Sabily-ultimate 11.04 "Badr" - amd64 (20110505)
PackageArchitecture: all
SourcePackage: sabily-grub-artwork
Title: package sabily-grub-artwork 1.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)