I am having the same problem, but with the USPS module. I followed the instructions in this post - http://www.ubercart.org/docs/user/312/usps_web_tool_shipping_quote_setti... . (although I couldn't find the patch mentioned). Everything appears to be setup, but I never get a quote back.

Firebug says:

syntax error
http://localhost/misc/jquery.js
data =

I should add, I am testing this on a lampp system if that makes any difference.