Hi, I realized the "error" after I tried to find a solution to play mario and luigi bowser's inside story (U). It says to just use YSmenu, the game would work fine. But it didn't, it kept freezing either at mic test or at save file selection screen. Once I installed the YSmenu as an .nds file, but now I installed it on my NDS as full YSmenu based, so everytime i turn on my NDS, it'd go straight to YSmenu game selection screen. Now, in my root folder, there are lotsa files, can anybody please tell me which one are supposed to be there, and which ones are not? The files are : _system_ folder cbds folder (for comic book ds) moonshl folder TTMenu games, savs _DS_MENU.DAT _DS_MENU.SYS _DS_MENU.NDS ttdldi.dat TTMENU.DAT TTMENU.SYS ttpatch.dat YSMENU.ARP YSMenu.ini YSMenu.nds YSMenu.txt YSMenu_Eng.txt Thanks for any help!