Tor/Privoxy

Does anyone have Privoxy and Tor running on a VirtualBox guest? The guest machine is openSUSE, and I have it configured for connection by NAT. I’ve edited the Privoxy config file as I have on the host system, and installed Torbutton. When I try to access a Web page, I get a warning sign and the message “or you can add an exception.” Testing the connection in Torbutton returns an internal error. There’s no info in the privoxy log.

If anyone has this working, I’d like to hear how you did it.