Exchange SP2 Rollup 1 and CAS members

Check the following Registry keys are present before updating a CAS member to SP2 Rollup 1.
If they are not present then OWA will be broken with missing files.


[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\PowerShellSnapIns]
@=""

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\PowerShellSnapIns\Microsoft.Exchange.Management.PowerShell.E2010]
"CustomPSSnapInType"="Microsoft.Exchange.Management.PowerShell.AdminPSSnapIn"
"ApplicationBase"="C:\\Program Files\\Microsoft\\Exchange Server\\V14\\bin"
"AssemblyName"="Microsoft.Exchange.PowerShell.Configuration, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
"Description"="Admin Tasks for the Exchange Server"
"ModuleName"="C:\\Program Files\\Microsoft\\Exchange Server\\V14\\bin\\Microsoft.Exchange.PowerShell.Configuration.dll"
"PowerShellVersion"="1.0"
"Vendor"="Microsoft Corporation"
"Version"="14.0.0.0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\PowerShellSnapIns\Microsoft.Exchange.Management.PowerShell.Setup]
"CustomPSSnapInType"="Microsoft.Exchange.Management.PowerShell.SetupPSSnapIn"
"ApplicationBase"="C:\\Program Files\\Microsoft\\Exchange Server\\V14\\bin"
"AssemblyName"="Microsoft.Exchange.PowerShell.Configuration, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
"Description"="Setup Tasks for the Exchange Server"
"ModuleName"="C:\\Program Files\\Microsoft\\Exchange Server\\V14\\bin\\Microsoft.Exchange.PowerShell.configuration.dll"
"PowerShellVersion"="1.0"
"Vendor"="Microsoft"
"Version"="14.0.0.0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\PowerShellSnapIns\Microsoft.Exchange.Management.Powershell.Support]
"CustomPSSnapInType"="Microsoft.Exchange.Management.Powershell.Support.SupportPSSnapIn"
"ApplicationBase"="C:\\Program Files\\Microsoft\\Exchange Server\\V14\\bin"
"AssemblyName"="Microsoft.Exchange.Management.Powershell.Support, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
"Description"="Support Tasks for the Exchange Server"
"ModuleName"="C:\\Program Files\\Microsoft\\Exchange Server\\V14\\bin\\Microsoft.Exchange.Management.Powershell.Support.dll"
"PowerShellVersion"="1.0"
"Vendor"="Microsoft Corporation"
"Version"="14.0.0.0"