Cas install Error


Getting the following error intalling the first Cas server in the org. We have a custom install of IIS which removes the default web site and default app pool. I have removed this install and loaded the windows default however the error is the same. Any idea??
Thanks


[03/30/2011 14:25:35.0139] [2] Active Directory session settings for 'Start-SetupProcess' are: View Entire Forest: 'True', Configuration Domain Controller: 'dendc05.na.mmfg.net', Preferred Global Catalog: 'dendc05.na.mmfg.net', Preferred Domain Controllers: '{ dendc05.na.mmfg.net }'
[03/30/2011 14:25:35.0139] [2] Beginning processing Start-SetupProcess -Name:'C:\Windows\System32\inetsrv\appcmd.exe' -Args:'install module /name:exppw /image:"C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll" /add:false' -IgnoreExitCode:'183'
[03/30/2011 14:25:35.0311] [2] Starting: C:\Windows\System32\inetsrv\appcmd.exe with arguments: install module /name:exppw /image:"C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll" /add:false
[03/30/2011 14:25:35.0531] [2] Process standard output: GLOBAL MODULE object "exppw" added

[03/30/2011 14:25:35.0546] [2] Process standard error:
[03/30/2011 14:25:35.0546] [2] Ending processing Start-SetupProcess
[03/30/2011 14:25:35.0546] [2] Active Directory session settings for 'Start-SetupProcess' are: View Entire Forest: 'True', Configuration Domain Controller: 'dendc05.na.mmfg.net', Preferred Global Catalog: 'dendc05.na.mmfg.net', Preferred Domain Controllers: '{ dendc05.na.mmfg.net }'
[03/30/2011 14:25:35.0546] [2] Beginning processing Start-SetupProcess -Name:'C:\Windows\System32\inetsrv\appcmd.exe' -Args:'add module /name:exppw /app.name:"Default Web Site/owa"' -IgnoreExitCode:'183'
[03/30/2011 14:25:35.0546] [2] Starting: C:\Windows\System32\inetsrv\appcmd.exe with arguments: add module /name:exppw /app.name:"Default Web Site/owa"
[03/30/2011 14:25:35.0593] [2] Process standard output: ERROR ( message:Must use exact identifer for APP object with verb SET. )

[03/30/2011 14:25:35.0593] [2] Process standard error:
[03/30/2011 14:25:35.0797] [2] Unexpected Error
[03/30/2011 14:25:35.0797] [2] Process execution failed with exit code 50.
[03/30/2011 14:25:35.0813] [2] Ending processing Start-SetupProcess
[03/30/2011 14:25:35.0828] [1] The following 1 error(s) occurred during task execution:
[03/30/2011 14:25:35.0828] [1] 0.  ErrorRecord: Process execution failed with exit code 50.
[03/30/2011 14:25:35.0828] [1] 0.  ErrorRecord: Microsoft.Exchange.Configuration.Tasks.TaskException: Process execution failed with exit code 50.
[03/30/2011 14:25:35.0828] [1] The following error was generated when "$error.Clear();
          $CommandAppCmd = join-path $env:SystemRoot System32\inetsrv\appcmd.exe;
          $imagePath = [System.IO.Path]::Combine($RoleInstallPath, "ClientAccess\Owa\auth\exppw.dll");
          Start-SetupProcess -Name "$CommandAppCmd" -args "install module /name:exppw /image:`"$imagePath`" /add:false" -IgnoreExitCode @(183);
          Start-SetupProcess -Name "$CommandAppCmd" -args "add module /name:exppw /app.name:`"Default Web Site/owa`"" -IgnoreExitCode @(183);
        " was run: "Process execution failed with exit code 50.".
[03/30/2011 14:25:35.0828] [1] Process execution failed with exit code 50.
[03/30/2011 14:25:35.0828] [1] [ERROR-REFERENCE] Id=ClientAccessOwaComponent___5effe7121e1740c083904cc189687464 Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup
[03/30/2011 14:25:35.0828] [1] Setup is stopping now because of one or more critical errors.
[03/30/2011 14:25:35.0828] [1] Finished executing component tasks.
[03/30/2011 14:25:35.0891] [1] Ending processing Install-ClientAccessRole
[03/30/2011 14:27:45.0818] [0] End of Setup
HappyMapiAsked:
Who is Participating?
 
HappyMapiAuthor Commented:
Elected to go with a vanilla install of IIS and it worked fine. Web guys are fine.
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endital1097Commented:
Check the modules in IIS Manager under the server
Look for the exppw module, if it is present go to modules under the Default Web Site and set it to native

If this module is missing, verify that you have all the Windows 2008 prerequisites installed
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e_aravindCommented:
small correction:

below the "Default web site\owa"
then click on the modules..to search for the exppw.dll

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e_aravindCommented:
IF really wanted to test all the OWA features, try checking the "OWA password change" option.

How to Enable the Exchange 2007 SP3 Password Reset Tool
http://technet.microsoft.com/en-us/library/ff607232(EXCHG.80).aspx
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HappyMapiAuthor Commented:
Worked
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