Have Lightroom version 4.2 on MacBook Air M1 w/ Big Sur OS. Every time I've opened it in the last couple of weeks I've been prompted to start an update, but nothing happens.
It says "A new version is available" and there's an "update" button (Figure 1). I click that and get a new button thay says "Lightroom will shutdown and the update will hapen via teh Creative Cloud Application," with the option to click a "Cancel" or "Update" button. I click "Update" aaaaand.....whole lotta nuthin'. LR stays open and the message in Figure 1 stays.