JefferyLimit

@Snaehild I face the same problem as you. Through my simple test, I found the problem. This problem is raised by attacking a specific monster whose Id is 1951. So for a workaround, you can temporarily delete the monster in your script. Changepoints as following. 1. Comment the code in your script. monster "pvp_n_1-5",0,0,"--ja--",1951,10,"Alon Event Warper::OnWave1"; To // monster "pvp_n_1-5",0,0,"--ja--",1951,10,"Alon Event Warper::OnWave1"; 2. Change the monster count in Wave1. Wave1: set .wave1,107; end; To Wave1: set .wave1,97; end; That's done. This problem seems bug from rathena. I have reported the bug to rathena. You can track the issue https://github.com/rathena/rathena/issues/6082. Enjoy that!