After I closed BookyAI on Windows, the shortcut said its target does not exist and I could not reopen the app. What happened?

BookyAI had downloaded an update, and on Windows it was installed silently when you closed the app. For about a minute the old version is removed and the new one is copied, with nothing on the screen, so the shortcut points at nothing for that minute. Wait one or two minutes and open BookyAI again: it works, on the new version. Do not end "BookyAI" in Task Manager during that minute (that is the installer), and if Windows offers to delete the shortcut, answer No. From version 1.9.18 this can no longer happen unseen: when you close the window with an update ready, BookyAI asks "Update now" or "Later". "Update now" shows the installer's progress and reopens the app by itself; "Later" closes normally and installs nothing. If you already deleted the shortcut or ended the installer and BookyAI no longer starts, run the BookyAI installer again: your books and settings are not touched by it.