GRUB install crashed when trying to install Ubuntu

[David Veres]

I tried to install Windows 7 (unsuccessfully) and after that I had to install Ubuntu again because Grub and the Ubuntu partition got corrupted. At the end of the installation the installer gave me an error that GRUB can not install on "/dev/sda0". Ubuntu did not install.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InterpreterPath: /usr/bin/python2.5
Package: ubiquity 1.10.10
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity gtk_ui
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/7782/environ'
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', 'gtk_ui']
SourcePackage: ubiquity
Title: ubiquity crashed with InstallStepError in configure_bootloader()
Uname: Linux 2.6.27-7-generic i686
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