Anna Nekoi

hello I want to play again after many years, I am trying to download the game but I get the following error "cannot find the file. click the update button again. If the same error persist, it may be due to ISP authentication failure, nac or a virus DD_C:\Program Files (x86)\NCSOFT\BNS\contents\bns\CookedPC\00029485.upk " sorry my bad english.