okay i have everything to make the ultima weapon. i click it to synthesize it and it shows me to choose between 2 different things, bright crystal and energy crystal. i click on energy crystal and it gets a little check next to it but now ... i dont know what to do. it wont let me synthesize. im on moogle lv 4 so i think im on the right level and i have everything i need so what do i have to do now? please help