Assertion failure in-[UIPickerTableView

Hi,

I am using UiPopOver to display the UIDatePicker when user clicks on UILabel. On Click i am using touches began and touches ended methods to capture click event and will display UIDatePicker as a pop-up. When clicked application crashes and gives me this strange error message.

*** Assertion failure in -[UIPickerTableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:], /SourceCache/UIKit_Sim/UIKit-3347.44/UITableView.m:9624

Please help to resolve this issue.

Thanks,

Laxy