Cannot validate argument on parameter 'MySiteHostLocation'. The argument is null....

[woter324]

Hi,
This one's been killing me all week. Thankfully a short week!

This snippet of a script connects to a SharePoint "app" server using PS Remoting and attempts to update the profile photos. Problem is, its telling me that one of the arguments is empty, but I cannot fathom why. Everything I have done to test suggests it has a value.

function updateSP(){
         $SPServer = ('PLVSSPAPP01','LVVSSPAPP01'),('DOMAIN\SA-SPAdmin-PL','DOMAIN\SA-SPAdmin-L'),('[URL unfurl="true"]http://mysites-pl','http://mysites')[/URL]
	#Iterates through each server in $SPServer array
	for($i=0; $i -lt $SPServer[0].length; $i++) {
		$server = $SPServer[0][$i] 
		$user = $SPServer[1][$i] 
		$mySitesUrl = $SPServer[2][$i]
		
		echo $server $user $Commandline $mySitesUrl
        
        # This Script block is a way of combining multiple commands:
        $myScriptBlock1 = {
            Add-PSSnapin Microsoft.SharePoint.PowerShell
            update-SPProfilePhotoStore -CreateThumbnailsForImportedPhotos 1 -MySiteHostLocation $mySitesUrl
       }
       try{
	$crd = credentials $server $user
	$session = New-PSSession -ComputerName $server -Authentication 'Credssp' -Credential $crd #-AllowRedirection
	Invoke-Command -Session $session -ScriptBlock $myScriptBlock1
	Write-Host "Sharepoint updated on $server, $mySitesUrl."
         Write-Host " "
	Remove-PSSession $Session
       }
       catch{
	$error.clear() 
	Write-Error "Error trying to connect to $server : $error"
       }
		
   }
}

The error:

Cannot validate argument on parameter 'MySiteHostLocation'. The argument is null. Supply a non-null argument and try the command again.
    + CategoryInfo          : InvalidData: (:) [Update-SPProfilePhotoStore], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.Office.Server.UserProfiles.PowerShell.SPCmdletUserProfilePhotoStore

In the echo line, $mySitesUrl (line 9)comes back with the correct value from the array.

If anyone could shed any light on why this script thinks it -MySiteHostLocation is blank I'd be very grateful.

Many thanks

W.