Trouble running a powershell script (4047375)

When you run the a powershell script you get see the following error.
"c:\vRangerPro\vRangerTape.ps1\nameofscript.ps1
Add-PSSnapin : No snap-ins have been registered for Windows PowerShell version 2.
At C:\vRangerPro\nameofscript.ps1\nameofscript.ps1:19 char:15
+ Add-PSSnapin <<<< vRanger.API.PowerShell
+ CategoryInfo : InvalidArgument:
(vRanger.API.PowerShell:String)
[Add-PSSnapin], PSArgumentException
+ FullyQualifiedErrorId :
AddPSSnapInRead,Microsoft.PowerShell.Commands.Ad
dPSSnapinCommand
vRanger PowerShell Cmdlets cannot be loaded. Please make sure the vRanger PowerShell Cmdlets are installed on this system."