I know about the issue, i did some tests, but I thought it was FontLab 5.1 realted.
And no, I'm not using Lion. Should dialogs work in Snow Leopard? As the traceback says it's seems the embeded python 2.7 can't import EasyDialogs...
I can build them with vanilla, I know, but it's not urgent enough. I'll wait for a while if there's no other way.