This patch replaces the use of the ComboBase::iterator with a local IViewCursor instance to get the first item. By using this method, we don't need to worry about the state of the ComboBase::iterator if an ItemPendingError is received (which could result in an endless loop of ItemPendingError depending on the size of the collections page cache). Further, I have added a try-catch block for ItemPendingError. When the item is available, the another attempt to set the index is made.