Hello Scott,
the file qc0-mclachlan.par in Cactus/repos/McLachlan/par worked with the *release* version of the toolkit (Curie, ET_2011_05). Results are available here: http://www.numrel.org/~rhaas3/ET_05_2011/ with a plot of the waveform http://www.numrel.org/~rhaas3/ET_05_2011/psi4_22.png
I am not sure if the current development version (trunk) will work with this parameter file.
Yours, Roland