Magento编译时：Mage registry key “_singleton/awall/feed_extensions” already exists

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Mage registry key “_singleton/awall/feed_extensions” already exists

Trace:
#0 /home/www/ok/app/Mage.php(192): Mage::throwException(‘Mage registry k…’)
#1 /home/www/ok/app/Mage.php(446): Mage::register(‘_singleton/awal…’, false)
#2 /home/www/ok/includes/src/__default.php(20644): Mage::getSingleton(‘awall/feed_exte…’)
#3 /home/www/ok/app/Mage.php(416): Mage_Core_Model_App->dispatchEvent(‘controller_acti…’, Array)
#4 /home/www/ok/includes/src/__default.php(13458): Mage::dispatchEvent(‘controller_acti…’, Array)
#5 /home/www/ok/includes/src/Mage_Adminhtml_Controller_Action.php(152): Mage_Core_Controller_Varien_Action->preDispatch()
#6 /home/www/ok/includes/src/__default.php(13362): Mage_Adminhtml_Controller_Action->preDispatch()
#7 /home/www/ok/includes/src/__default.php(17627): Mage_Core_Controller_Varien_Action->dispatch(‘index’)
#8 /home/www/ok/includes/src/__default.php(17218): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#9 /home/www/ok/includes/src/__default.php(19710): Mage_Core_Controller_Varien_Front->dispatch()
#10 /home/www/ok/app/Mage.php(640): Mage_Core_Model_App->run(Array)
#11 /home/www/ok/index.php(80): Mage::run(”, ‘store’)
#12 {main}
有一个非官方的解决办法：

may be this helps some one.

first go to app/etc/modules/aw_all.xml
change true to false

first go to app/etc/modules/aw_blog.xml
change true to false
then log in to admin you admin will work now.

then

go to system->tools->compilation
disable it.

now
first go to app/etc/modules/aw_all.xml
change false to true

go to app/etc/modules/aw_blog.xml
change false to true

and then check if it is working or not..

thanks

有时候，删除cache文件也是一种办法