1) I have download the package and I exchanged the files at less-directory at my website. And Frontpage is working now correctly, without failure-message.
2) Thank you for the changes on the breadcrumb. Perfect.
3) Which version of ACY shall I use? I tought, when I install the latest ACY, then the old directory ACY5 will be updated automaticly. Is it easy to delete ACY5 from my backend? Are there any importants links, which are connected with the template itself? When I have a look at modules I can see ACY 5.6.0 and ACY 6.19.3. To uninstall ACY4 I would do this at Extensions / Manage or?
Thank you for your help,
Kind regards from Austria,