Fails at Step 17 of 18:

Single Server Install - Coexistence with Ex2010 SP3

Currently on CU1 with Ex2013

Error Recieved during setup:

11/26/2013 20:11:05.0256] [1] [ERROR] The following error was generated when "$error.Clear();
          $configFilePath = [System.IO.Path]::Combine($RoleInstallPath, "bin", "GenericAppPoolConfigWithGCServerEnabledFalse.config");
          $rpcProxyCLRConfigFilePath = [System.IO.Path]::Combine($RoleInstallPath, "bin", "MSExchangeRpcProxyAppPool_Cafe_CLRConfig.config");
          $windir = $env:windir;
          [System.Array] $appPoolsExcludedFromWorkstationGC = "msexchangerpcproxyapppool","internalexchangesharedapppool";
          $appPools = &"$windir\system32\inetsrv\appcmd.exe" "list" "apppool";
          foreach($appPool in $appPools)
          {
              $startIndex =  $appPool.IndexOf('"') + 1;
              $numChars = $appPool.SubString($startIndex).IndexOf('"');
              $appPoolName = $appPool.SubString($startIndex, $numChars);

              # Do not enable Workstation GC for AppPools that Allocate greater than 50MB/s at their peak e.g. MSExchangeRpcProxyAppPool
              if ($appPoolName.ToLower() -eq "msexchangerpcproxyapppool")
              {
                  $c= &"$windir\system32\inetsrv\appcmd.exe" "set" "apppool" "$appPoolName" /CLRConfigFile:"$rpcProxyCLRConfigFilePath";
                  Write-ExchangeSetupLog -Info ($c)
              }
              elseif ($appPoolsExcludedFromWorkstationGC.Contains($appPoolName.ToLower()) -ne $true)
              {
                  # We'll set this whether or not the app pool exists.  Failures are ignored.
                  $a= &"$windir\system32\inetsrv\appcmd.exe" "set" "apppool" "$appPoolName" /managedRuntimeLoader:"";
                  $b= &"$windir\system32\inetsrv\appcmd.exe" "set" "apppool" "$appPoolName" /CLRConfigFile:"$configFilePath";
                  Write-ExchangeSetupLog -Info ($a + " " + $b)
              }
              else
              {
                  Write-ExchangeSetupLog -Info "Skipping $appPoolName since it should remain as Server GC";
              }
          }
        " was run: "Cannot convert 'System.Object[]' to the type 'System.String' required by parameter 'Message'. Specified method is not supported.".
[11/26/2013 20:11:05.0256] [1] [ERROR] Cannot convert 'System.Object[]' to the type 'System.String' required by parameter 'Message'. Specified method is not supported.
[11/26/2013 20:11:05.0256] [1] [ERROR] Specified method is not supported.
[11/26/2013 20:11:05.0256] [1] [ERROR-REFERENCE] Id=CafePostSetupComponent___SelectedAppPoolsToGCServerFalseCafe Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup
[11/26/2013 20:11:05.0256] [1] Setup is stopping now because of one or more critical errors.
[11/26/2013 20:11:05.0256] [1] Finished executing component tasks.
[11/26/2013 20:11:05.0506] [1] Ending processing Start-PostSetup
[11/26/2013 20:22:02.0489] [0] End of Setup

Brian A Bohanna