The wiki should mention that you should change current culture for the powershell installation script to work properly (as it uses text in english from commands).
This should be insert right before calling .\install-commerce-server.ps1 :
[Threading.Thread]::CurrentThread.CurrentUICulture = 'en-US';
This will change the culture for the current powershell session and now the script works on localized systems.
The wiki should mention that you should change current culture for the powershell installation script to work properly (as it uses text in english from commands). This should be insert right before calling .\install-commerce-server.ps1 : [Threading.Thread]::CurrentThread.CurrentUICulture = 'en-US';
This will change the culture for the current powershell session and now the script works on localized systems.