If you have updated the game software but still experience crashing when sharing eggs with friends, i can't help. Sorry for that :( The problem lies within the developers. But there is one fun part about this issue. Every time you crashed after you give an egg, your friend is ACTUALLY receive the egg! Wait i'm not done yet. The best part is, you STILL POSSESS the egg that you just gave your friend! Me and my wife have proven this.
However, crashing is sucks best like vacuum cleaner. So if you want the developers to fix this issue as soon as possible, you my beloved readers, need to write a review on iTunes about this issue and mentioned about the crash. Give them one star rating if you feel necessary (i still gave them four). The more people write about this crash, the more likely they will notice ;)