Hi, I mean that you need to compile the fuzzylite binaries and use them instead of the ones already compiled available in fuzzylite.com.
(1) follow the building steps described in github.com/fuzzylite/fuzzylite,
(2) compile the fuzzylite libraries from source using your VS2013, and
(3) use the resulting binaries from step (2) to link your project under VS2013 and whatever windows you are using.
In other words, do not use the fuzzylite binaries (namely fuzzylite.lib, fuzzylite.dll) downloaded from http://www.fuzzylite.com because those were built under VS2010 and Windows XP.