Mac: Getting FindFailed when using cron to run sikuli script --- use a LaunchAgent instead

For some reason in the crontab situation it takes longer than 3 seconds (standard waiting time) for the image Serendresuru.png to get visible or the browsers url bar looks different in this case, so you get a FindFailed exception.

so try this:

wait("Serendresuru.png", 10) # wait for the browser to be oppened
click(getLastMatch()) # click on the browser URL bar

or this
click(wait("Serendresuru.png", 10))

both versions wait for max 10 seconds and click on the match that was already found.

You might also try the option:
setFindFailedResponse=PROMPT

see docs: http://sikuli.org/docx/region.html#exception-findfailed

Hello RaiMan,
thanks for your answer. I tried to increase the waiting timeout. However, the script still crashes after firefox launch.
Here is the URL of the script I tried to run : http://dl.free.fr/uEwA3en1O

After the script launch, I have the following errors :
Erreur d'exécution lors de l'exécution /var/folders/04/m1d41v257yxg1t1_h8n2ct5m0000gn/T/tmp-312126120.sikuli/test.sikuli
Traceback (most recent call last):
  File "/var/folders/04/m1d41v257yxg1t1_h8n2ct5m0000gn/T/tmp-312126120.sikuli/test.sikuli/test.py", line 4, in <module>
    wait("KSerendresur.png",10)
  File "/Applications/Sikuli-IDE.app/Contents/Resources/Java/sikuli-script.jar/Lib/sikuli/Region.py", line 101, in wait
  Line 9, in file /var/folders/04/m1d41v257yxg1t1_h8n2ct5m0000gn/T/tmp-312126120.sikuli/test.sikuli/test.py

 at org.sikuli.script.Region.handleFindFailed(Region.java:420)
 at org.sikuli.script.Region.wait(Region.java:511)
 at org.python.proxies.sikuli.Region$Region$0.super__wait(Unknown Source)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)

org.sikuli.script.FindFailed: FindFailed: can not find KSerendresur.png on the screen.
  Line 9, in file /var/folders/04/m1d41v257yxg1t1_h8n2ct5m0000gn/T/tmp-312126120.sikuli/test.sikuli/test.py

Close

I am not getting my cron environment on my Mac Lion to work (I know, there are some tricks, but I do not get it).
atrun is still disabled here - does this hinder cron to run?

So for the moment I cannot test the situation.

But this might be the cause: the cron jobs are started in background as far as I know. So they do not have access to the screen.
This might be the problem with Sikuli here.

If you want to run the Sikuli script at 01:00, just start it and implement a wait until that time.You can make it a loop, so it runs every day automatically.

and this is a snippet, how to calculate the time to wait until a specific time:

until = list(time.localtime())
until[3:6] = (15, 54, 0) # hour minute second
timeUntil = time.mktime(tuple(until))
timeToWait = int(timeUntil - time.time())

# only for debug
fmt = "time to wait from now %s til %s : %d sec"
print fmt%(time.strftime("%H:%M"),
        time.strftime("%H:%M", tuple(until)),
        timeToWait)

Thank you for the trick RainMan.

 "atrun is still disabled here - does this hinder cron to run?"
-> I dont know, cron was built in and activated on my computer.

"But this might be the cause: the cron jobs are started in background as far as I know. So they do not have access to the screen."
-> You are probably right, cron specific implementation on OSX may not simply work with sikuli script :(

My main goal was to implement a web page, that could run several schedule sikuli script at different defined time.
So I supposed that crontab was the best solution.

However, I found an interesting link in the Ubuntu community forum, according to this french thread : http://forum.ubuntu-fr.org/viewtopic.php?id=607831, cron would work on Linux Ubuntu.
The man who wrote this post succeeded in executing a sikuli script on Ubuntu using this following command :
"*/6 * * * * DISPLAY=:0 /home/solho/Sikuli/Sikuli-IDE/sikuli-ide.sh -r /home/solho/Sikuli/9boxAUTOparams.sikuli > /tmp/log9box 2>&1" (using DISPLAY=:0 doesnt work in OSX)

Im sad that crontab doesnt work on OSX (I was using OSX in view of avoiding installing the sikuli's dependencies), I may try to migrate to Ubuntu and trying again.

Thanks RaiMan, that solved my question.