If you mean files at http://mirrors.kodi.tv/nightlies/win32/master/ they have just a wrong name.
64-Bit test builds can be found at http://mirrors.kodi.tv/test-builds/win64/
The mentioned thread is http://forum.kodi.tv/showthread.php?tid=136034
Windows - Win32 x64 XBMC x64 port - work in progress
Joined: Feb 2015
2017-03-13 23:00 Post: #151