Sanity check tells me that the win version must be defective. (that's way too small compared to mac)
It works for you because you have the Unity development files installed. For a normal player like me, it complains about a missing UnityPlayer.dll. Also, there is usually a directory with the name of the exefile plus "data" appended, in your case it would be a directory named "Recalculating_Data". You have to find both of these and make a new zip file.