According to the documentation, the (optional) 'name' attribute of <cfmapitem> should be the name of the map, not of the marker. Try this (or just remove it completely):
Although the examples on that same page then does exactly as you've done, use the name attribute to give names to the markers. So I'm not sure my solution is correct or not!
Alternatively you could try using the addMarker function:
Tried it both ways - with name the same as the name if cfmap and removing the name. Still no marker.
Tried the addMarker function and still no marker
Just a thought, do you have the most recent cumulative hotfix applied?
Also I'd be interested to know the solution if you ever manage to get this resolved.