Hope you can see from the two photos above the first one was taken in 2011 showing my fine healthy Robinias.
The second photo below was taken last year 2012 and the canopy is thin and sparse.
This year both trees are dead.
I have replaced one with a small Copper Beech ( pretty ) and the other with a pillar shaped Golden Elm ( just as bright ).
I would not personally have advised Rodgy-Dodge to plant the new Robinia where the dead one was taken out as the spores from the deadly disease are probably still in the ground.
I have noticed that other Robinias in my surrounding area have also disappeard this year, not good!
Good luck with your new tree Rodgy-Dodge,and let us know if it survives.