PowerShellGet commands not working -> $LocalizedData not set

When I run for example the following command:
Set-PSRepository -Name PSGallery -InstallationPolicy Trusted

I get the following error:
PackageManagement\Set-PackageSource : The variable ‘$LocalizedData’ cannot be retrieved because it has not been set.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\PSGet.psm1:1673 char:17

  • … $null = PackageManagement\Set-PackageSource @PSBoundParameters
  •                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    • CategoryInfo : InvalidOperation: (LocalizedData:String) [Set-PackageSource], Exception
    • FullyQualifiedErrorId : VariableIsUndefined,Microsoft.PowerShell.PackageManagement.Cmdlets.SetPackageSource

Any ideas? I have to admit that I’m a Powershell newby.

Found the problem. The PowShellGet folder under Program files\WindowsPowerShell\Modules did not contain a folder for my culture “en-GB”.