it happened to me regardless of what version of mini client that i used..

usually it will happen in 2 situation:

1) after prolonged online (~30min to 1hour in my experience), then either i or opponent used kakuzu AC mystery for FIRST time.. game will crashed

2) after MULTIPLE times of kakuzu AC mystery either by opponent or me (for me after 3rd or 4th kakuzu mystery in different battle.. ie in DB or GNW with many kakuzu AC).. then game will crashed

For me, situation (1) is more common than situation (2), not sure about others..

I likes this game & will continue to play for now.. so what i usually do is, i will close mini client & restarted back just before main event like GNW or sometimes if im doing DB but yet sometimes it still can crashed

I have no other way to overcome it