Powershell script for WSUS to decline IA64

I'm trying to weed out and decline itanium updates from my WSUS server to save space.

I found a technet page that gave me an almost ready to go script (just change environment variables). Link [Microsoft Technet]

The idea of the script is to decline all Itanium/IA64 updates and send an email stating what it has declined.

I have made the environment changes to the script and I receive the same two errors but I have no idea what they mean or how to resolve them.

Errors:

Exception calling "GetUpdateServer" with "3" argument(s): "The type initializer for 'Microsoft.UpdateServices.Internal.Constants' threw an exception."

At

You cannot call a method on a null-valued expression.

At

Here is the code from the Technet link link (above).

$WsusServer = ""
$UseSSL = $false
$PortNumber = 
$TrialRun = $true

#E-mail Configuration
$SMTPServer = ""
$Recipients = ""
$MessageSubject = "WSUS :: Declining Itanium Updates"

Function SendEmailStatus($MessageSubject, $MessageBody)
{
	$SMTPMessage = New-Object System.Net.Mail.MailMessage $FromAddress, $Recipients, $MessageSubject, $MessageBody
	$SMTPMessage.IsBodyHTML = $true
	#Send the message via the local SMTP Server
	$SMTPClient = New-Object System.Net.Mail.SMTPClient $SMTPServer
	$SMTPClient.Send($SMTPMessage)
	$SMTPMessage.Dispose()
	rv SMTPClient
	rv SMTPMessage
}

#Connect to the WSUS 3.0 interface.
[reflection.assembly]::LoadWithPartialName("Microsoft.UpdateServices.Administration") | out-null
$WsusServerAdminProxy = [Microsoft.UpdateServices.Administration.AdminProxy]::GetUpdateServer($WsusServer,$UseSSL,$PortNumber);

#$itanium = $WsusServerAdminProxy.SearchUpdates('Itanium') | ?{-not $_.IsDeclined}
#$itanium += $WsusServerAdminProxy.SearchUpdates('ia64') | ?{-not $_.IsDeclined}
#Although the above seems faster it also seaches in the description of the update so use the below just to search the title!
$itanium = $WsusServerAdminProxy.GetUpdates() | ?{-not $_.IsDeclined -and $_.Title -match “ia64|itanium”}
If ($TrialRun)
{$MessageSubject += " Trial Run"}
Else
{$itanium | %{$_.Decline()}}

$Style = ""

If ($itanium.Count -gt 0){

	$MessageBody = $itanium | Select `
	@{Name="Title";Expression={[string]$_.Title}},`
	@{Name="KB Article";Expression={[string]::join(' | ',$_.KnowledgebaseArticles)}},`
	@{Name="Classification";Expression={[string]$_.UpdateClassificationTitle}},`
	@{Name="Product Title";Expression={[string]::join(' | ',$_.ProductTitles)}},`
	@{Name="Product Family";Expression={[string]::join(' | ',$_.ProductFamilyTitles)}},`
	@{Name="Uninstallation Supported";Expression={[string]$_.UninstallationBehavior.IsSupported}} | ConvertTo-HTML -head $Style
	SendEmailStatus $MessageSubject $MessageBody
}

I am using WSUS 3.0 on Server 2008 R2 Enterprise.

I am NOT using PoshWSUS.