application crashes while scrolling long list selector

I am using a longlistselector cont开发者_如何学Crol in my WP7 app, to show some products, the problem is that when i scroll to the last few items at the bottom , the application crashes . Any idea why it is happening?

This is because longlistselecter was used inside a scrollviewer , i removed the scrollviewer and it worked.

I had the same problem, although it wasn't in a ScrollViewer, it was in a Grid. Removing it from the Grid resolved the issue.