Versión 2.8.3 Where is it?

I've just installed versión 2.8.3. I've downloaded it from the first item in Downloads.
I've tried the Beta version too.

The problem is that in any case, when I open the IDE always obtain the next message:

Twice!!!

Where is the 2.8.3 version?

Before installing the new version, did you first fully uninstall the previous version (via Windows Control Panel add/remove software?