hi all. please help me. i have an nokia 5250 im tried to play a flv file (the flash player on this device is preinstalled ) first time it plays very good ,after, i closed the application and then tried another flv file it start to open but is not opening and appears "system error" ,i've tried all my flv files but they all are not playing and appears system errors .what should i do ? PLEASE HELP ME!