Cannot extract category list error with CB Goliath
1) First of all, make sure you have the very latest version of the plugin. Please go under "plugins", find "CB Goliath " and click the "update automatically" link. If you can't see this link, then click the "check for updates" link. If you can't even see a "check for updates" link, then it means you have a very old version of the plugin.
2) The error means that the plugin was able to login to your ClickBank account and loaded the marketplace page but couldn't scrape categories from the page. This could be caused by ClickBank showing a notice page (like maintenance or incomplete profile) instead of the marketplace or redirecting you to another page for some reason. Please try again after a few hours and see if it helps.