I'm trying to use [this](http://iphone2020.wordpress.com/2012/10/01/uitableview-tricks-part-2-infinite-scrolling/) method to implement an infinitely scrolling `UITableView`

The core logic of the solution is: 

1. To increase the tableview content by a factor of 3, so that we make the 3 copies of the content laid one after another vertically.
2. Whenever the top end of the scroll is reached, move the the scroll offset back to start of the 2nd copy
3. When the bottom end of the scroll is reached, we move the scroll offset back to the start of the 2nd copy minus the height of the tableview, so that we end up showing the same content as we are now.

This means that a single cell insert or delete actually results in three inserts or deletes. Because my table's datasource is populated by an `NSFetchedResultsController` it causes an Assertion Failure.

> 
> The number of rows contained in an existing section after the update (12) must be equal to the number of rows contained in that section before the update (15), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out). 
> 
> 
> 

Is there some way to stop the program from crashing in these cases? I'd really appreciate any help/pointers. Thanks.