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You now have broken MSI record in your system. It was broken before you started to install a newer version, and that's why older version removal failed.

To fix it, you might try the official tool from Microsoft. Personally I didn't try it in my practice, so don't know how well does it its job.

Me myself use the old and discontinued Windows Installer Clean Up utility. But it is no longer available from official sources, so if you decide to find and download it, do it on your own risk, because you would do that from third-party sites. Also, although it always had worked for me, it is very dangerous when used improperly, and may bring your system to a state when you'd need to reinstall your system.