Scheduled tasks not working
 

Hi,

I have added scheduled tasks of my own that are not working.

I can run them manually and they work fine, but they are not running by themselves as they should.

I have set time interval of 10 mins by keeping all fields as * and the minute fields as 10, 20, 30, 40, 50, 59.

Whenever I go in edit and save that task again then only the 'next time' gets updated but still the task doesn't runs.

Any ideas?

I'm not using any plugins/add-on etc. Any help would be appreciated.
Thanking you in anticipation.

So you wrote your own php script for the cron job? Did you basically copy a script of a real cron job and just make your needed changes in order to create the task? If it isn't running as a Scheduled Task, then something is wrong on the code and it's impossible to tell without you posting your code.

Does the "last run" time change at all? It sounds like the task system itself isn't functioning, which can be for a few reasons that I've seen in these forums.

First off, the footer template. Can you find these lines?

<!-- Do not remove cronimage or your scheduled tasks will cease to function -->
{vb:raw cronimage}
<!-- Do not remove cronimage or your scheduled tasks will cease to function -->

If not, there's your problem. It's located between the Powered by vBulletin and the copyright lines.

I remember seeing a thread either here or on vb.com by someone who started using a page caching service on their forum, which killed the scheduled tasks. The reason that happens is because the {vb:raw cronimage} generates a 1x1 image with a random number on the end. If this number isn't changing, the scheduled task system will think it was just a cached page being pulled, and won't run any tasks.

Just some general info to add to @Thunderbird8's input:
See ... /includes/class_bootstrap.php #397 (relative)

This is where $cronimage is defined. In using various external 'caching' methods, I have come across what @Thunderbird8 was referring to.

Since each external caching system works differently, exempting this from the cache can get a bit tricky and sometimes modification of this line of code is necessary.