UICollectionView adding UICollectionCell

When I try to put UICollectionCell to UICollectionView in Interface Builder I can't put it with unknown reasons. The cell is going to the tools bar without adding to UICollectionView

I am using:

iOS SDK 6.0
XCode 4.5.1
I don't use Storyboard

How do I add a cell to collection view?

Select The Collection View and go the Size inspector. In the Collection View section change the Cell Size to a width and height of 100 points. Drag a Label from the Object Library and place it on the Center of the Collection View Cell.

Only UICollectionView inside StoryBoard have UICollectionViewCell inside. If use XIB, create a new XIB with CellName.xib, add CollectionViewCell to it, specify name of UICollectionView custom class. After that use registerNib.

Sample code: https://github.com/lequysang/TestCollectionViewWithXIB