Dear,
We are getting below error while accessing Admin url, I just installed Flagbit module (https://www.magentocommerce.com/magento-connect/flagbit-change-attribute-set.html) and all of sudden the below error occures.
We are completely blocked now, please help.
There has been an error processing your request
Mage registry key "_singleton/flagbit_changeattributeset/observer" already exists
Trace:
#0 /chroot/home/jumbosho/jumboshoppers.com/html/app/Mage.php(223): Mage::throwException('Mage registry k...')
#1 /chroot/home/jumbosho/jumboshoppers.com/html/app/Mage.php(477): Mage::register('_singleton/flag...', false)
#2 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(21427): Mage::getSingleton('flagbit_changea...')
#3 /chroot/home/jumbosho/jumboshoppers.com/html/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('adminhtml_block...', Array)
#4 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/Mage_Adminhtml_Block_Template.php(80): Mage::dispatchEvent('adminhtml_block...', Array)
#5 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(2592): Mage_Adminhtml_Block_Template->_toHtml()
#6 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/Mage_Adminhtml_Block_Dashboard_Diagrams.php(55): Mage_Core_Block_Abstract->toHtml()
#7 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(1966): Mage_Adminhtml_Block_Dashboard_Diagrams->_prepareLayout()
#8 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(27705): Mage_Core_Block_Abstract->setLayout(Object(Mage_Core_Model_Layout))
#9 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/Mage_Adminhtml_Block_Dashboard.php(66): Mage_Core_Model_Layout->createBlock('adminhtml/dashb...')
#10 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(1966): Mage_Adminhtml_Block_Dashboard->_prepareLayout()
#11 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(27705): Mage_Core_Block_Abstract->setLayout(Object(Mage_Core_Model_Layout))
#12 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(27721): Mage_Core_Model_Layout->createBlock('adminhtml/dashb...', 'dashboard')
#13 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(27488): Mage_Core_Model_Layout->addBlock('adminhtml/dashb...', 'dashboard')
#14 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(27454): Mage_Core_Model_Layout->_generateBlock(Object(Mage_Core_Model_Layout_Element), Object(Mage_Core_Model_Layout_Element))
#15 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(27459): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#16 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(13895): Mage_Core_Model_Layout->generateBlocks()
#17 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(13820): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#18 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/Mage_Adminhtml_Controller_Action.php(275): Mage_Core_Controller_Varien_Action->loadLayout(NULL, true, true)
#19 /chroot/home/jumbosho/jumboshoppers.com/html/app/code/core/Mage/Adminhtml/controllers/DashboardController.php(40): Mage_Adminhtml_Controller_Action->loadLayout()
#20 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(13969): Mage_Adminhtml_DashboardController->indexAction()
#21 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(18331): Mage_Core_Controller_Varien_Action->dispatch('index')
#22 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(17865): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#23 /chroot/home/jumbosho/jumboshoppers.com/html/includes/src/__default.php(20465): Mage_Core_Controller_Varien_Front->dispatch()
#24 /chroot/home/jumbosho/jumboshoppers.com/html/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#25 /chroot/home/jumbosho/jumboshoppers.com/html/index.php(87): Mage::run('', 'store')
#26 {main}
