Sadly still game closed with multi client enabled. To summarise:
1. I tried everything listed in https://www.bnsbuddy.com/index.php?threads/common-errors-and-possible-fixes.39/
2. Delete bin files and do a file scan using bns launcher
3. Uninstall everything including bnsbuddy, then reinstall everything without changing anything
4. Open with launcher, game run fine. Open with bnsbuddy without multi client, no problem (multi client enabled, game closed after logo)
5. Funny that if i enable multi client and run it with 32bits, no problemopening the game except game randomly crash at crowded place (normal for 32bits client i guess)
What i do before using bnsbuddy. i use "disable_gameguard/ggkiller" because it bypass launcher login and can open multi client. After the latest update it kinda feel like sth gone wrong with the game, so i remove it and use bnsbuddy, while my friends dont have any problem open multi client with it only me have issue with this game closed problem. i running on windows 10 v2004. i no install xigncode too.