problem with serialisation

Hello evrybody,

sorry for my English, i'm not a expert.

I'have a problem, i want to test à project of my friend, he give me the code to try it, and i can open the scene. i have a error, and it is: " Failed to load 'Assets/Projet village.unity' because its serialized file version is higher than what this version of Unity supports."

but we have the same version (5.2.1 personnal) just i have windows 10 and he has windows 7.

thank you for help. see you soon