After downloading the set up from mega.co , i installed. After which i open the file location and didn't find any ' royalms cilent or mapleroyal cilent which is .exe ' , then i find it on my desktop RoyalMS , i double clicked it , it asked me to locte the royal ms cilent .exe , help!
You antivirus program likely deleted the RoyalMS exe completely. Run the setup again while your antivirus is disabled.