I was trying to re-compile the offline server the way you explained it with Visual Studio 2017. so i 1. open rAthena-15.sln then press ctrl + shift + b and then after it is done i close it and i run runserver.bat. in this moment my pc automatically removes my "runserver.bat" from my pc and i dont know why. might be my antivirus i dont know im gonna test it out later..