Did you download the Money Plus installation file from the link in the second "sticky" thread in this forum:
https://social.microsoft.com/Forums/en-US/479281b2-90f9-42ca-85f7-644fc6e1e5c3/download-microsoft-money-installation-files-solve-activation-and-some-other-errors?forum=money
As for the registry change, I don't know about the version change, but this post:
https://social.microsoft.com/Forums/en-US/d5aa1dc8-7b75-43c4-9a5b-836d09b41b0f/i-can-not-install-money-sunset-edition?forum=money
describes a different registry change that may work for you. Let us know how you make out.
Bill Becker