@Keith-Borders It looks like the Grand Piano instrument wasn't installed correctly.
Please uninstall a program called Magix Content and Soundpools. Then you get a list of Soundpools and Vita Instruments. Select the broken Concert Grand LE and uninstall it.
@Keith-Borders Please go to the store tab inside Music Maker and select the category of instruments. It should be an item in the list. Select the LE-version and you should be able to download it again. It is then installed automatically.
@Keith-Borders It looks like you are correct. I couldn't find it, too. I think you need to reinstall Music Maker in this case. For example, if you delete the free Soundpool that comes with Music Maker ("Feel Good") you also cannot get it back without reinstalling the program.