The release note

Windows Framework

  • Fixed - cRichEdit writes utrf in the header of an .rtf file that created incompatibilities with other tools

Probably you meant "urtf" instead.

Also, this could be nothing, but I have a habit to save all the previous installs for DF/VDF. The install size usually goes up with each release.
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Seems a bit odd to have the install size go down for newer release. Again, could be nothing.

Frank Cheng