Script running in the background and buffer overflow

Question

Hi,
I have written a script that is supposed to be a background process, which will check every 5 minutes if given person is logged in on Skype.
The script does it basic job (alters me when given person is on Skype) but when I try to quit it (see code below, first display dialog inside on idle handler) it does not quit. Instead it displays "buffer overflow" or "stack overflow" error message (I am not certain how to exactly translate the error message - it is not in English as I am not running MacOS X in English). Also on rare occasions it displays another error message about terminated connection.
Any advise about how get rid of these errors would be greatly appreciated.
I have saved the script as an application and I have added to Contents/info.plist the following:
Application is agent (UIElement) = true
Here is the applet code:
global interval
global _path
on run
set _path to POSIX path of (alias ((path to me as text) & "Contents:Resources:sound.aif"))
set interval to 300
end run
on idle
tell application "System Events"
set _run to (name of processes) contains "Skype"
end tell
if _run = true then
tell application "Skype"
set _Calls to send command "SEARCH ACTIVECALLS" script name "cal"
end tell
if _Calls = "CALLS" then
tell application "Skype"
set Lstat to send command "GET USER " & "user_nickname" & " ONLINESTATUS" script name "stats"
set AppleScript's text item delimiters to " "
set status to text item 4 of Lstat
if status is "OFFLINE" then
--do nothing
else
do shell script "afplay " & _path
tell me
activate
display dialog "user_nickname is on Skypie" buttons {"OK", "Change interval", "Quit"} default button 1 giving up after 60 with icon note with title "Skype check"
if button returned of the result is "Quit" then
quit
else if button returned of the result is "Change interval" then
display dialog "Enter new interval in minutes:" buttons {"OK"} default button 1 default answer "5" with title "Skype check"
set interval to ((text returned of the result as number) * 60)
end if
end tell
end if
end tell
else
-- do nothing
end if
else
-- do nothing
end if
return (interval as number)
end idle
on quit
quit
end quit

Answer 1

Delete the following code:
on quit
quit
end quit
The purpose of the 'on quit' handler is so additional instructions can be executed when the script is told to quit. If desired, 'continue quit' can be part of the handler to call the normal quit command; without the 'continue', the script just repeats the handler over and over with no exit, which causes the overflow.
(53695)