http://imageshack.us/photo/my-images/715/shot00270.png/ this is me using treasure box. it requires 1,4k s cry and 2,5kk . rewards should be these http://boards.lineage2.com/showthread.php?t=214916 . but all i got was wind crystal. is it bug ? :/ if not damn i screwed my self bad.
those aren't the same hero treasure chests. the link you posted is for a promotion made by ncsoft na, some time ago to give people gear till s grade. the hero treasure chest is a new god thing you get for donating crystals (a-r) to aden reconstruction w.e :d you still got one of the worst rewards however...
only on innovaaaaa ! *comical comment music playing* it's a shame really that we have to learn a lot of things the hard way =/