package notify-osd 0.9.30-0ubuntu4 failed to install/upgrade: subprocess installed post-removal script returned error exit status 2

I can't activate nvidia drivers.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: notify-osd 0.9.30-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
Uname: Linux 2.6.38-10-generic-pae i686
Architecture: i386
Date: Wed Aug 10 21:49:53 2011
DpkgTerminalLog: Can not write log, openpty() failed (/dev/pts not mounted?)
ErrorMessage: subprocess installed post-removal script returned error exit status 2
GtkTheme: Ambiance
IconTheme: ubuntu-mono-dark
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcKernelCmdLine: root=UUID=5b9cb4c8-71fb-47a2-875e-4bcb65f1f81b ro quiet rootflags=data=writeback
RelatedPackageVersions:
 xserver-xorg 1:7.6+4ubuntu3.1
 libgl1-mesa-glx 7.10.2-0ubuntu2
 libdrm2 2.4.23-1ubuntu6
 xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
 xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
SourcePackage: notify-osd
Title: package notify-osd 0.9.30-0ubuntu4 failed to install/upgrade: subprocess installed post-removal script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)
WindowManager: gnome-wm
dmi.bios.date: 12/11/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.30
dmi.board.name: A770CrossFire
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.30:bd12/11/2009:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnA770CrossFire:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
glxinfo: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden