Unable to properly serialize ?????

I made a c# script for networking game

in editor all of it work , but when I build and run the project gives me a message and
didn’t work correctly

the warring message :

Unable to properly serialize object for the player of class ‘MPPlayer’ because of extra field ‘MatchLoaded’ of type ‘System.Boolean’ (expecting ‘MPPlayer’ ‘MyPlayer’)

please any help …

Just go to unity asset store and search for unity serializer and from there you will get it free and just use that in your Project and enjoy It was developed by mike for more info on that go to http://whydoidoit.com/unityserializer/

Don’t forget to mark the answer if found useful…Enjoy Cheers…