You were saving trilithium to buy a silver pack. You finally buy it and open it. You are very happy as you have unlocked the Deadlock rifle! But when you go to craft it, it shows you still haven't unlocked it. You look at your trilithium. It still shows the same number as before! You buy another silver pack. This time you unlock the shotgun- Shock! But the same thing happens again. This happened to me infinite no. of times. About to finish the multiplayer with highest kills,game crashes,sadness.