package flashplugin-installer 10.2.153.1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Lotus Schwartz III]

Binary package hint: flashplugin-nonfree

I got the error when installing ubuntu restricted extras

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: flashplugin-installer 10.2.153.1ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: wl
Architecture: amd64
Date: Sun Apr 10 13:24:49 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
SourcePackage: flashplugin-nonfree
Title: package flashplugin-installer 10.2.153.1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)