package nvidia-current 260.19.21-0ubuntu1 failed to install/upgrade: subprocesso script post-installation instalado retornou erro do status de saída 1

Made a Natty Alpha 1 USB stick following the Jono Bacon post (http://www.jonobacon.org/2010/11/30/testing-natty-and-unity-safely-with-a-usb-stick/). When I tried to install the package "nvidia-current" on the test environment it gave me this error. (I wanted to try Unity.)

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: nvidia-current 260.19.21-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
Uname: Linux 2.6.37-7-generic i686
Architecture: i386
DRM.card0.HDMI_Type_A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1366x768 1024x768 800x600 640x480 720x400 640x400 640x350
 edid-base64: AP///////wANrxgTAAAAAAgTAQOAHRB4CqnllVlWkCchUFQAAAABAQEBAQEBAQEBAQEBAQEBEhtWblAADzAgFSQAKKYQAAAYAAAA/gBOMTM0QjYtTDAyCiAgAAAA/gBDTU8KICAgICAgICAgAAAA/gBOMTM0QjYtTDAyCiAgAJs=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Thu Dec 9 16:07:18 2010
DkmsStatus:

ErrorMessage: subprocesso script post-installation instalado retornou erro do status de saída 1
GdmLog1: Error: command ['cat', '/var/log/gdm/:0.log.1'] failed with exit code 1: cat: /var/log/gdm/:0.log.1: No such file or directory
GdmLog2: Error: command ['cat', '/var/log/gdm/:0.log.2'] failed with exit code 1: cat: /var/log/gdm/:0.log.2: No such file or directory
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101206)
MachineType: Hewlett-Packard HP Pavilion dv3 Notebook PC
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
SourcePackage: nvidia-graphics-drivers
Title: package nvidia-current 260.19.21-0ubuntu1 failed to install/upgrade: subprocesso script post-installation instalado retornou erro do status de saída 1
dmi.bios.date: 04/21/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.06
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 306D
dmi.board.vendor: Compal
dmi.board.version: 22.23
dmi.chassis.type: 10
dmi.chassis.vendor: Compal
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.06:bd04/21/2009:svnHewlett-Packard:pnHPPaviliondv3NotebookPC:pvrF.06:rvnCompal:rn306D:rvr22.23:cvnCompal:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv3 Notebook PC
dmi.product.version: F.06
dmi.sys.vendor: Hewlett-Packard
glxinfo: Error: [Errno 2] Ficheiro ou directoria inexistente
system:
 distro: Ubuntu
 codename: natty
 architecture: i686
 kernel: 2.6.37-7-generic