offline client: SQL Installation of Microsoft SQL Server Express Edition 2008 (CRM) failed.

Hi,

I am trying to install the Offline client on a Windows 8 machine with Outlook 2010. The installation fails due to the failed installation of SQL Server 2008. 

Here is part of the log file:

18:44:01|   Info| Installing Microsoft SQL Server Express Edition 2008 (CRM)

18:44:01|   Info| Log file: C:\Program Files (x86)\Microsoft SQL Server\100\Setup Bootstrap\Log\Files\SQLSetup0001_W8-AIR_SQL.log

18:44:01|   Info| Launching external process:

18:44:01|   Info|      CmdLine:  <"C:\\CrmSqlSetup\setup" /q /HIDECONSOLE /ACTION=Install /FEATURES=SQLENGINE /SQLSYSADMINACCOUNTS="Builtin\Administrators" /INSTANCENAME=CRM /SQLSVCACCOUNT="NT AUTHORITY\SYSTEM" /X86=TRUE>

18:44:01|   Info|   WorkingDir: <C:\\CrmSqlSetup>

18:45:25|   Info| Installation of Microsoft SQL Server Express Edition 2008 (CRM) failed. Exit code: 2227044356. Result: Unknown exit code 2227044356 18:45:25|   Info| Resuming automatic updates

18:45:26|   Info| Uninitializing COM.

18:45:26|   Info| Uninitialized COM.

18:45:26|   Info| Uninitializing COM.

18:45:26|   Info| Uninitialized COM.

18:45:26|   Info| === Setup bootstrap logging started 3/20/2013 6:45:26 PM ===

18:45:26|   Info| Bootstrap version: 5.0.9690.3233.

18:45:26|   Info| User: xxxxx.

18:45:26|  Error| Installation of Microsoft Dynamics CRM for Outlook failed.

Any idea?

Thanks