>Hello,
>
>I am trying to run a silent install using a batch file (from an VFP application). The problem is that the setup stops quietly, and it also does not generate the expected logs where I could see what is going on.
>
>It also does not create the InstanceDir. I started the application in admin mode.
>
>When running install directly and SQL installer does the checks all succeed.
>
>Maybe the problem is that this is a 64bit machine, and I have already another version of SQL 64 bit installed, but I am trying to figure out how that is going to work, because this also should be done on a client's machine where I cannot control the environment to easily.
>
>Here is the batch file:
>
>Install\MsSql\SQLEXPR_x86_ENU.exe /INSTANCEID="FW" /ACTION="Install" /FEATURES=SQLENGINE /HELP="False" /INDICATEPROGRESS="False" /QUIET="True" /QUIETSIMPLE="False" /X86="False" /ERRORREPORTING="False" /INSTALLSHAREDDIR="C:\Program Files (x86)\Microsoft SQL Server" /INSTANCEDIR="C:\PROJECTS\FRAMEWRK\SQLServer" /SQMREPORTING="False" /INSTANCENAME="FW" /AGTSVCSTARTUPTYPE="Manual" /ISSVCSTARTUPTYPE="Automatic" /ISSVCACCOUNT="NT AUTHORITY\NetworkService" /ASSVCSTARTUPTYPE="Automatic" /ASCOLLATION="Latin1_General_CI_AS" /ASDATADIR="Data" /ASLOGDIR="Log" /ASBACKUPDIR="Backup" /ASTEMPDIR="Temp" /ASCONFIGDIR="Config" /ASPROVIDERMSOLAP="1" /SQLSVCSTARTUPTYPE="Automatic" /FILESTREAMLEVEL="0" /ENABLERANU="True" /SQLCOLLATION="SQL_Latin1_General_CP1_CI_AS" /SQLSVCACCOUNT="NT AUTHORITY\NETWORK SERVICE" /SQLSYSADMINACCOUNTS="CHRISTIAN-PC\Christian" /SECURITYMODE="SQL" /SAPWD="gamma129" /ADDCURRENTUSERASSQLADMIN="False" /TCPENABLED="1" /NPENABLED="0" /BROWSERSVCSTARTUPTYPE="Automatic" /RSSVCSTARTUPTYPE="Automatic" /RSINSTALLMODE="FilesOnlyMode"

Check if this thread http://social.msdn.microsoft.com/Forums/en-US/sqlexpress/thread/b76d46ba-a903-47e5-ad84-91f758b007a3 can be of any help.