New Post: New-SPSecureStoreApplication Failes

I seem to run in to the following issue rather regularly - the issue is always with the call to "New-SPSecureStoreApplication" and always on the "Identity" parameter. What changes is which service application causes the issue. Today it is Excel.

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 - Provisioning Excel Services Application...
 - Checking local service instance...
 - Starting Excel Calculation Services...
 - Waiting for Excel Calculation Services...Online
 - Creating Excel Services Application...
 - Re-importing SP PowerShell Snapin to enable new cmdlets...
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 - Loading SharePoint PowerShell Snapin...
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 - Configuring service app settings...
 - Setting unattended account credentials...
 - Creating Secure Store Target Application aef0fd14-f206-4c27-b043-3987a492e30b-ExcelUnattendedAccount...
 - Creating Secure Store Application...
New-SPSecureStoreApplication : Secure Store Service did not performed the operation.
At \\10.0.1.8\Software\Installers\SharePoint\AutoSPInstaller\AutoSPInstallerFunctions.ps1:5111 char:47
+                             $secureStoreApp = New-SPSecureStoreApplication -Serv ...
+                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (Microsoft.Offic...toreApplication:SPNewSPNewSPSecureStoreApplication) [New
   -SPSecureStoreApplication], AddressAccessDeniedException
    + FullyQualifiedErrorId : Microsoft.Office.SecureStoreService.PowerShellCmdlet.SPNewSPNewSPSecureStoreApplication

 - Updating Secure Store Group Credential Mapping...
Update-SPSecureStoreGroupCredentialMapping : Cannot validate argument on parameter 'Identity'. The argument is null.
Supply a non-null argument and try the command again.
At \\10.0.1.8\Software\Installers\SharePoint\AutoSPInstaller\AutoSPInstallerFunctions.ps1:5119 char:78
+                         Update-SPSecureStoreGroupCredentialMapping -Identity $se ...
+                                                                              ~~~
    + CategoryInfo          : InvalidData: (:) [Update-SPSecure...edentialMapping], ParameterBindingValidationExceptio
   n
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.Office.SecureStoreService.PowerShellCmdlet.SP
   UpdateSPSecureStoreGroupCredentialMapping

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 - Script halted!
 - Error provisioning Excel Service Application