Mac Unexpectedly crashes when i click on tier 2 rune page in the store.

Its so strange, i want to check out the sale for tier 2 runes, but when I do, my Mac Client unexpectidley crashes the second it tries to open, I dont know much but this is Some Bug! this sucks cause it isnt really fair that i cant buy runes. If you are on a mac try it yourself and say anything you can! this should be looked at