Note, the error I received was a variant of the "vcomp120.dll is missing" message mentioned on the download screen. Though in my case, it was vcomp120R.dll and vcomp120S.dll is missing.
I installed spriter on a Microsoft Surface Pro 4 and I got several DLL errors even after installing Visual Studio 2013 C++ runtime. That said, I downloaded/installed Visual Studio 2010 C++ runtime and it resolved my problem. Thought I'd mention it incase it helps anyone.