Unfortunately there is indeed a problem with the installer in 6.0.22 which means that it won’t correctly install the x64 version of Dorico on an ARM64 machine. (It is possible to work around this to some extent, if you download the installer and run the MSI rather than running Setup.exe, but this is only a partial workaround.) We should be able to fix this installer issue in a forthcoming release. However, that doesn’t mean that Dorico 6 will then run as a native ARM64 app - it just means that you will be able to install the x64 app as before.
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