[Dan Lester]

OK, the problem is resolved. Took a month to figure it out. I updated Growl, and the problem remained. Growl refused to notify me conspicuously with a "stay on screen" bubble when a copy was completed. It did on one machine, but not on another. I thought Growl was set up identically on both, but it turned out not to be.

In Growl Preferences, under Applications, you have to be careful to examine all the tasks the application can be doing. Under "Copy failed", "Stay on screen" was set to "Always". But oops, in "Scheduled copy succeeded", "Stay on screen" was set to "Application Decides" on that one machine. And whaddaya know, SuperDuper! decided to tell Growl not to have it's "scheduled copy succeeded" report bubble stay on screen!

So once I set "Scheduled copy succeeded" "Stay on Screen" to "Always", everything worked. I got up in the morning to see a bubble reporting that SuperDuper! had succeeded in making the copy.

So, Dave, why does SuperDuper! decide to tell Growl not to have the report bubble stay on the screen?