Is the a way to turn off the UITableView delegates temporarily?

I have a UITableView with the usual table view delegates. The problem is that the table开发者_如何学Python is built from core data .. so when my refresh method runs it refills the core data entities. I think this means that the data for the table is unstable, and hence it crashes on a line like this (in 'cellForRowAtIndexPath'):

cell.textLabel.text = [object valueForKey:@"title"];

gets this error:

Detected an attempt to call a symbol in system libraries that is not present on the iPhone:
_Unwind_Resume called from function _PFFaultHandlerLookupRow in image CoreData.

If this is indeed the problem, how would I 'turn off' the table view delegates temporarily so it doesn't crash due to unstable data?

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Well, you could set the delegate and datasource propery to nil if you really want to do this.

Looking at the error, I don't think this is the problem though.