"There has been an error processing your request" - Magento Community

[catalyst00]

Two days ago I updated M2E pro to latest version, It ran fine and today all of a sudden I am getting this when I attempt to login to magento admin

There has been an error processing your request

Exception printing is disabled by default for security reasons.

Error log record number: 1265883671

The content of the log file which makes no sense to me of course, any help would be greatly appreciated.  

a:5:{i:0;s:21:"Email already exists.";i:1;s:2338:"#0 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(676): Mage::throwException('Email already e...')
#1 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(424): Mage_Core_Model_Resource_Db_Abstract->_checkUnique(Object(Mage_Admin_Model_User))
#2 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Model/Abstract.php(318): Mage_Core_Model_Resource_Db_Abstract->save(Object(Mage_Admin_Model_User))
#3 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Admin/Model/Session.php(171): Mage_Core_Model_Abstract->save()
#4 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Admin/Model/Observer.php(95): Mage_Admin_Model_Session->refreshAcl()
#5 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Model/App.php(1338): Mage_Admin_Model_Observer->actionPreDispatchAdmin(Object(Varien_Event_Observer))
#6 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Model/App.php(1317): Mage_Core_Model_App->_callObserverMethod(Object(Mage_Admin_Model_Observer), 'actionPreDispat...', Object(Varien_Event_Observer))
#7 /homepages/45/d547592157/htdocs/lba/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array)
#8 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Controller/Varien/Action.php(527): Mage::dispatchEvent('controller_acti...', Array)
#9 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Adminhtml/Controller/Action.php(160): Mage_Core_Controller_Varien_Action->preDispatch()
#10 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Controller/Varien/Action.php(407): Mage_Adminhtml_Controller_Action->preDispatch()
#11 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('index')
#12 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#13 /homepages/45/d547592157/htdocs/lba/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#14 /homepages/45/d547592157/htdocs/lba/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#15 /homepages/45/d547592157/htdocs/lba/index.php(87): Mage::run('', 'store')
#16 {main}";s:3:"url";s:66:"/index.php/admin/index/index/key/f01100fea04e734c3c4a8dc9203fc051/";s:11:"script_name";s:10:"/index.php";s:4:"skin";s:5:"admin";}

[Brent W Peterson]

Have you cleared your cache?

[catalyst00]

I can't even login, is there a way to clean the cache without loging in? 

[chiefair]

Delete all the mage--? subfolders in var/cache/ using your SFTP client

[mlbianchi]

I and visitors to my website have been getting this error message as well.

I have cleared all the cache.  I have gotten the error when updating the shopping cart.  My customer got the error twice when looking clicking on items in the shopping cart menu.

Anyone have any ideas?  Does the newest security patch help?

Thanks,

Mary Lynne

[catalyst00]

No one seems to have an answer, I have tried all the solutions but no luck. I am not sure if there is anyone out there with a solution.