In UINavigationController can't go back any solution

hi,
In my application i have used UINavigationController and it goes to another view easily.
Means is navigate successfully but when i press back button previous view is also coming but then apps get hang.
So any solution for that?????? how can i make my apps successfully runin g?????.
Thanks.

could be a few things.
do you have anything going on in viewWill(Did)Load in the first view?

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In UINavigationController can't go back any solution

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