Two days ago I installed the latest version of uc_ano, mentioned here. I have the same problems. For my planed online shop I need some complexe attribute selections. Customers can choose for some piece of clothing different kind of materials and depending on the material selection, they can choose the available colors. In Summary I will have up to 4 or 5 groups of these material-color combinations.

First I also realized, that Ajax Attribute Calculation is not working together with uc_cano.

Second, the tool is disabling the selected attributes and not enabling. I like the idea, to be able to choose, if the tool should disable or enable the selected attributes. But at the moment I can't choose.

drupal 6.17
ubercart 6.x-2.3
uc_cano 1.1