Well yesterday the whole program just disappeared?!?!? The window came up but it was totally white, no cabinet display. Hmmmm....
Anyway I reloaded the software and then downloaded the update from this website.
I had noticed before I lost the program that latency was set at 99ms. I set it to about 50ms and everything seems to be working fine now.
So now I'm not sure if there was a software problem, or if it just needed the update, or if it was just the latency setting.
Oh, well, I'm happy now!