It seems that the nightly Windows builds have not compiled properly since January 28th. The build currently available on the server is revision e24449c from that date.
This is very odd - I have re-compiled this manually on the server simply by running the nightly script from the command line, and we now seem to have the latest version. I am not sure what the problem was, but it seems to be fixed now.
Thank you for reporting this.
Can I confirm that this is now fixed?
Yes it is.