Crontab stopped running after upgrading to mac os 10.8.5 Pls advise what needs to be done to run the crontab on mac 10.8.5.
Here is my problem.
I had a crontab running smoothly on my mac 10.6.8.  Now, after upgrading to 10.8.5, the crontab does not run anymore.
I followed the suggestion in the net and created the /private/etc/crontab file.  Do I have to enter the crontab script into this file? Or do I have to enter the crontab into the file in the default 10.8 folder /usr/lib/cron/tab/ ?  Or do I have to do both?  May be something else.

Thank you.

The crontab job I want to run is the following:
27,57   9,10,11,12,13,14,15,16,17   *   *   *  osascript -e "tell application \"System Events\" to activate" -e "tell application \"System Events\" to display alert \"Do your Stuff\"" > /dev/null 2>&amp;1
I'm running OS X 10.8.5 and use CronniX to setup my cron job, it works just fine in OS X 10.8.5.