I am using the following adapter, I think. The picture looks like it at least. I know it is Flash Zebra, just not sure the actual adapter.
http://www.flashzebra.com/hotshoes-shoes/0064.shtmlSo I tested with completely charged batteries. It would fire occasionally but not consistently. I think that it is the batteries. Someone mentioned that they have had troubles with rechargable batteries that wouldn't work in some units. I think that the batteries don't put out enough voltage to fill the capacitor to it's peak. I don't really know how to discribe it, but when it charges, the noise it makes never seems to get all the way there.
I am going to pick up some standard alkaline batteries, and test then. I will keep you posted.