i don't why my timetable is still empty by this time, i have already chosen all the courses since the end of June.does anyone know what is going on? please see my attachment
thanks

the same thing happened to me. Its cause by a glitch in the system. You have to call registrar and they will flag it and it'll be rebuilt manually. Its not a big deal. If you check Solar you should be still enrolled in the cores and tutorials so you can make the time table yourself if you want to see it now.