I can confirm that I'm experiencing exactly the same problem after a fresh install

Added as http://www.ventismedia.com/mantis/view.php?id=14433

I can confirm, installed version is 4.1.18.1852 if you "check for updates" mm say that the installed version is 4.1.16.1852 and that 4.1.18.1852 is available for download.

When checking MMW 4.1.18.1852 for updates, a wrong version info appears

- installed version 4.1.[b]16[/b].1852
- new version 4.1.18.1852

installed version on windows is 4.1.[b]18[/b].1852