Thanks, Vlad.
We had to do some modifications in preparation to the release - GUIDs and minor architectural changes. That's why it is required to uninstall the earlier Beta first.
The workaround (other that the one you found) would be to install the earlier Beta again, uninstall it and only then go with the RC1 build.
This is not going to be a problem for the future builds.
Thank you,
Serge Baranovsky
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