If you write your own AppleScripts, you’ve probably seen an alert box pop up with this message when you try to run your script:

Press Run to run this script, Quit to quit.

<rant>This annoyance calls to mind Microsoft’s ingenious “click Start to shutdown” design motif. I mean, if I launched this script in the first place, why should I have to tell you again?)</rant>

Fix: When you save the script as an app using “Save as…”, look at the save options carefully. Make sure the “Startup screen” checkbox is unchecked before saving.

Works for me.