Cron error while executing log_clean

[newyorkwebdesign]

Receiving this error via email:

`Cron error while executing log_clean:

exception 'Mage_Core_Exception' with message 'Invalid callback: Model for log/cron::logClean does not exist' in /home/shop_production/htdocs/app/Mage.php:595
Stack trace:
#0 /home/shop_production/htdocs/app/code/community/Aoe/Scheduler/Helper/Data.php(298): Mage::throwException('Invalid callbac...')
#1 /home/shop_production/htdocs/app/code/community/Aoe/Scheduler/Model/Job.php(143): Aoe_Scheduler_Helper_Data->getCallBack('log/cron::logCl...')
#2 /home/shop_production/htdocs/app/code/community/Aoe/Scheduler/Model/Schedule.php(192): Aoe_Scheduler_Model_Job->getCallback()
#3 /home/shop_production/htdocs/app/code/community/Aoe/Scheduler/Model/Schedule.php(582): Aoe_Scheduler_Model_Schedule->runNow(true)
#4 /home/shop_production/htdocs/app/code/community/Aoe/Scheduler/Model/Observer.php(39): Aoe_Scheduler_Model_Schedule->process()
#5 /home/shop_production/htdocs/app/code/core/Mage/Core/Model/App.php(1357): Aoe_Scheduler_Model_Observer->dispatch(Object(Varien_Event_Observer))
#6 /home/shop_production/htdocs/app/code/core/Mage/Core/Model/App.php(1336): Mage_Core_Model_App->_callObserverMethod(Object(Aoe_Scheduler_Model_Observer), 'dispatch', Object(Varien_Event_Observer))
#7 /home/shop_production/htdocs/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('default', Array)
#8 /home/shop_production/htdocs/shell/scheduler.php(377): Mage::dispatchEvent('default', Array)
#9 /home/shop_production/htdocs/shell/scheduler.php(37): Aoe_Scheduler_Shell_Scheduler->cronAction()
#10 /home/shop_production/htdocs/shell/scheduler.php(403): Aoe_Scheduler_Shell_Scheduler->run()
#11 {main}`

Any ideas? Thansk