I downloaded and installed Spriter_r6_1 on my workstation, which is a Windows 10 Pro 64bit machine...
When I tried to start the application it gives me the error that "vcomp100.dll" is missing; since I am a Windows developer as well, I know that this means some C++ runtime file is missing... so, I just searched for the Visual Studio 2010 C++ runtime files setup, that let me know, that the runtime is already installed. Since you´re not pointing out different downloads for 32bit and 64bit Windows (like you do for Linux) I assume that the Windows version is still 32bit (shame on you guys). I haven´t tried to install the 32bit runtime...
Will there be a 64bit Windows version soon? Or at least a proper setup which contains all necessary runtime files?