On checking the URL where the software used to reside we now only get an error screen.
Arktronic speculates this may be to issues with Visual Studio 2008. While we have not been able to confirm this elsewhere, we can say in our attempts to make the emulator visible in Visual Studio has all ended in failure, so that does seem rather plausible.
We will update this article when more information becomes available.
Update: Official word from the WMDev twitter channel:
Well, thatâ€™s one theory