clustered item titles do not show up using Jef Poskanzer's Clusterer

I'm using Jef Poskanzer's Clusterer and I'm trying to get several nodes to show up at the same address and be listed in the gmaps bubble.

It is real close, but it isn't showing any node titles. I think this makes the clustered view just show the points in the bubble, but not any title, link to node etc.

Non-clustered nodes show fields any field specified in the view, but also does not show the title (it does show the node title label though, if that is specified).

So this issue may not have anything to do with Jef Poskanzer's Clusterer, but simply that the node title doesn't work from the view.

Picture is attached.