I've download the latest version of Drupal (6.19) and installed afresh with only the ubercart and CANO module installed. The CANO version is where I copy and pasted the contents of the module to new files. I was using Drupal 6.17.
It's working! This is a very useful module and I can see a lot of people in need of something like this. I'm using it with Safari 5.01 with OSX and it's fine so far. I'm going to slowly install the other uber modules I was using and see if any disable CANO. I'll let you know if they do.
One question. Is there a way to force a product to have an option without the user actually having to click on it, when there's only one possible choice?
For example the site I'm working on a user has a choice of contract length and a setup fee. I'm using CANO to figure out which setup fee applies but would like it to be added automatically as they don't have a choice. For a more complete explanation see my post here:
Thanks a lot for your help.