Hi
Please can you say what Operating System you are using (Windows XP, Window 5,6,7,8,9,10 etc etc?).
Also just to clarify, when you say 'reinstall. You have downloaded navyfield'afresh' from this website? if so, once you have downloaded (ive seen the below post) can you please say (or better still post a picture) of exactly what the error is? And was you a prior Navyfield Europe Player?