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When trying to install the software I'm getting a message "the specified account already exists." How do I fix that?


If you are trying to install any Notation Software product and are seeing the error "the specified account already exists", it is typically an issue with a registry entry.  To fix this issue, you will need to use Microsoft's Install/Uninstall Cleaner, which you can download from http://aka.ms/Program_Install_and_Uninstall . For details, please see Microsoft's page regarding the problem https://support.microsoft.com/en-us/help/17588/fix-problems-that-block-programs-from-being-installed-or-removed