[Freeswitch-dev] Getting a 502 Bad Gateway error trying to do a windows build

I'm trying to do a windows build, but when the build tries to download files from http://files.freeswitch.org/downloads/libs/pthreads-w32-2-7-0-release.tar.gz (for example), it gets a 502 Gateway error, resulting in 1K files that can't be properly processed. How do I resolve this?