New-VIProperty : 27/09/2010 9:14:11 AM    New-VIProperty        Extension prope
rty with name 'LastPoweredOffDate' is already defined for type 'VirtualMachine'
.    
At line:38 char:15
+ New-VIProperty <<<<  -Name LastPoweredOffDate -ObjectType VirtualMachine -Val
ue {(Get-VMLastPoweredOffDate -vm $Args[0]).LastPoweredOffDate}
    + CategoryInfo          : InvalidOperation: (VMware.VimAutom....VirtualMac 
   hine:RuntimeType) [New-VIProperty], VimException
    + FullyQualifiedErrorId : Util10PS_CustomizationMetadataRepository_Registe 
   rExtensionProperty_ExtensionPropertyAlreadyExists,VMware.VimAutomation.ViC  
  ore.Cmdlets.Commands.NewVIProperty
 
New-VIProperty : 27/09/2010 9:14:11 AM    New-VIProperty        Extension prope
rty with name 'LastPoweredOffUserName' is already defined for type 'VirtualMach
ine'.    
At line:39 char:15
+ New-VIProperty <<<<  -Name LastPoweredOffUserName -ObjectType VirtualMachine 
-Value {(Get-VMLastPoweredOffDate -vm $Args[0]).UserName}
    + CategoryInfo          : InvalidOperation: (VMware.VimAutom....VirtualMac 
   hine:RuntimeType) [New-VIProperty], VimException
    + FullyQualifiedErrorId : Util10PS_CustomizationMetadataRepository_Registe 
   rExtensionProperty_ExtensionPropertyAlreadyExists,VMware.VimAutomation.ViC  
  ore.Cmdlets.Commands.NewVIProperty
 
New-VIProperty : 27/09/2010 9:14:11 AM    New-VIProperty        Extension prope
rty with name 'LastPoweredOnDate' is already defined for type 'VirtualMachine'.
    
At line:40 char:15
+ New-VIProperty <<<<  -Name LastPoweredOnDate -ObjectType VirtualMachine -Valu
e {(Get-VMLastPoweredOnDate -vm $Args[0]).LastPoweredOnDate}
    + CategoryInfo          : InvalidOperation: (VMware.VimAutom....VirtualMac 
   hine:RuntimeType) [New-VIProperty], VimException
    + FullyQualifiedErrorId : Util10PS_CustomizationMetadataRepository_Registe 
   rExtensionProperty_ExtensionPropertyAlreadyExists,VMware.VimAutomation.ViC  
  ore.Cmdlets.Commands.NewVIProperty
 
New-VIProperty : 27/09/2010 9:14:11 AM    New-VIProperty        Extension prope
rty with name 'LastPoweredOnUserName' is already defined for type 'VirtualMachi
ne'.    
At line:41 char:15
+ New-VIProperty <<<<  -Name LastPoweredOnUserName -ObjectType VirtualMachine -
Value {(Get-VMLastPoweredOnDate -vm $Args[0]).UserName}
    + CategoryInfo          : InvalidOperation: (VMware.VimAutom....VirtualMac 
   hine:RuntimeType) [New-VIProperty], VimException
    + FullyQualifiedErrorId : Util10PS_CustomizationMetadataRepository_Registe 
   rExtensionProperty_ExtensionPropertyAlreadyExists,VMware.VimAutomation.ViC  
  ore.Cmdlets.Commands.NewVIProperty