Fancy Product Designer Multistep Product Configurator Another
As stated in the topic, I still cannot upgrade to WC 3.0 (I have updated to FPD 3.4.2), because every time I add an item to the cart, it shows $0. Another thing that I noticed is that it shows the main picture as the thumbnail, and not the custom picture. Also, if I try to edit the product from the cart, then FPD does not show on the product page, just the product like it was never an FPD product. If I disable WC 3.0, and enable WC 2.9, I have no issues.
That is not caused by FPD, please check for conflicts with third party plugins and your theme.