Like you copied entire folder "plugins" from archive to C:\program files\team mediaportal\mediaportal folder,
you need to copy entire folder "language" from archive to C:\program files\team mediaportal\mediaportal folder too.
This will create a subfolder C:\program files\team mediaportal\mediaportal\language\MultiShortcut with xml files needed.
Regards.
That must have been my problem too. You should put that in the installation document.
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