I supposed the cause of the problem but I what to see myself. Well the problem is on how do you created the zip, if you got some linux I suggest try to uncompress there and you'll see what happen ( goes wrong ). Is quite dificult to explain the reason, but basically is the application you've used to create the zip file. I suggest you try with 7zip or winrar. The problem with zip file is that is not UTF-8 compliance and there's not standard implementation ( you can find several, one goes better than others ). If you compress zip file on windows and uncompress on same windows using same application all goes right and you thing everything is correct, but when you change to other OS or other windows you can find out some unexpected suprises, is your case.