i found what happened with jabo 1.5.1,if i select the options triple buffer vsync or triple buffer,the gui flashes,it happens with jabo 1.5 too,but i have other problems now:from nowhere,the control doenst work well anymore,i'm playing f-zero x n or the control go too much to left or to right.N the save states dont work,it saves with extension .sra n ultrahle asks for extension .sav,n i loaded the save state i made of f-zero x n it didnt work right.N in the select mode in f-zero x,the game becomes a bit slower n in game this happened too.