Why the error?
This HumHub
[root@askee protected]# ./yiic cron daily
Processing : *@narod.ru: exception 'Swift_DependencyException' with message 'Cannot lookup dependency "cache./tmp" since it is not registered.' in /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/DependencyContainer.php:101
Stack trace:
#0 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/DependencyContainer.php(302): Swift_DependencyContainer->lookup('cache./tmp')
#1 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/DependencyContainer.php(108): Swift_DependencyContainer->_createAlias('cache')
#2 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/DependencyContainer.php(369): Swift_DependencyContainer->lookup('cache')
#3 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/DependencyContainer.php(347): Swift_DependencyContainer->_lookupRecursive('cache')
#4 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/DependencyContainer.php(129): Swift_DependencyContainer->_resolveArgs(Array)
#5 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/Message.php(48): Swift_DependencyContainer->createDependenciesFor('mime.message')
#6 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/vendors/swiftMailer/classes/Swift/Message.php(75): Swift_Message->__construct(NULL, NULL, NULL, NULL)
#7 /var/www/askee/data/www/***.ru/protected/extensions/yii-mail/YiiMailMessage.php(113): Swift_Message::newInstance(NULL, NULL, NULL, NULL)
#8 /var/www/askee/data/www/***.ru/protected/commands/shell/EMailing/EMailing.php(67): YiiMailMessage->__construct()
#9 /var/www/askee/data/www/***.ru/protected/commands/shell/ZCron/ZCronRunner.php(101): EMailing->run(Array)
#10 /var/www/askee/data/www/***.ru/protected/vendors/yii/console/CConsoleCommandRunner.php(71): ZCronRunner->run(Array)
#11 /var/www/askee/data/www/***.ru/protected/vendors/yii/console/CConsoleApplication.php(92): CConsoleCommandRunner->run(Array)
#12 /var/www/askee/data/www/***.ru/protected/vendors/yii/base/CApplication.php(180): CConsoleApplication->processRequest()
#13 /var/www/askee/data/www/***.ru/protected/yiic.php(26): CApplication->run()
#14 /var/www/askee/data/www/***.ru/protected/yiic(5): require_once('/var/www/askee/...')
#15 {main}[root@askee protected]#