When using Cardbook with TB 68.x there was a toolbar button to bring up Cardbook. I used this all the time. I just installed Cardbook for TB 78.x and there is no Cardbook toolbar button in the customize toolbar window. Was the toolbar button removed for TB 78 or do I have a problem on my end somewhere?
OK… then the problem must be on my end. When I go into customize toolbar the Cardbook icon is not even available to be dragged to the toolbar. I tried removing Cardbook and re-installing it and that didn’t fix the problem. I am on the same OS and the same versions of TB and Cardbook as you are.