Skript Fehler.....

Hallo,

ich habe folgendes Script:

#
# PowerCLI script for monitoring old VM snaphots in a datacenter.
# Author: Haukur Kristinsson
#
# Example commandline in nsc.ini (for NRPE++):
# command[check_REYDatacenterSnaphots]=C:\Users\haukurk>powershell -PSConsoleFile "c:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\vim.psc1" "& 'c:\ReportsCLI\REYSnapshotNagios.ps1'"
# Where check_REYDatacenterSnaphots is the command, vim.psc1 the console file, and REYSnapshotNagios.ps1 this script.
#
# This is nothing fancy, but I decided to share it with you..
#

$server = "VMCBDF01" #vCenter server..
$user = "xxxx\User" # user
$pass = "xxxxxx" # pass

$datacenter = "Datacenter" # datacenter name
$criticalSnaphostDays = -1 # how many days can a snapshot last?

Connect-VIServer -Server $server -Protocol https -User $user -Password $pass

#Start with 0 snapshots :-)
$oldSnapshots = 0

# Fetch snapshots from the datacenter.
Get-View -ViewType VirtualMachine -Property Name,Snapshot -SearchRoot(Get-Datacenter $datacenter | get-view).MoRef `
-Filter @{"Snapshot"="VMware.Vim.VirtualMachineSnapshotInfo"} | foreach-object {
    $vmname = $_.Name
    (Get-View -Id $_.MoRef -Property Snapshot).Snapshot.RootSnapshotList | foreach-object {
        If ($_.CreateTime -lt (get-date).adddays($criticalSnaphostDays))
        {
		# Lets increment the integer.
		$oldSnapshots++
        }
    }
}

# Return Values for NRPE: 
# - OK (0)  
$exitOK = 0
# - WARNING (1) 
$exitWarn = 1
# - Critial (2)
$exitCritical = 2 
# - UNKNOWN (3)
$exitUnknown = 3

# Exit with approriate exit code.
if ($oldSnapshots -eq 0) {
	Write-Host "OK - $oldSnapshots snapshots older than $criticalSnaphostDays"
	exit $exitOK 
}
if ($oldSnapshots -eq 1) {
	Write-Host "WARNING - $oldSnapshots snapshots older than $criticalSnaphostDays"
	exit $exitCritical 
}

# Something went wrong...
Write-Host "UNKNOWN script state"
exit $returnStateUnknown

Es kommt die Meldung Unknown script state…...
Finde den Fehler leider nicht......
Jemand eine Idee warum er mir das auswirft?

Danke und Gruß
Dennis