I never played there but sum ideas i can give u in my previous problems are, wen dualboxing, keep it to full screened on the .exes, never window mode it, it may just crash. Another thing is idk but if wen ur servers running, theres a lil L2 icon on the bottom right were the time is on your desktop, but if there is right click it and i think u click run l2.exe, that runs another box and it shudnt crash, those are my tips if they dont work, just post it on their offical server forums.....