Mage registry key “_singleton/license/module” already exists

[sytc]

I have stumbled upon this error while reinstalling a backup from Installatron and I can't seem to make it go away.

I have encountered this error as I was doing this.

1. Update Magento using Instrallatron to 1.9.1
2. Found it to mess with all the CSS and as we don't have the web guy in office at the moment...
3. Delete the site.
4. Re-install the installatron backup created just before update.

The error occurs in both frontend and backend.

I have read some other posts regarding singleton errors so... - tried flushing the cache (delete everything in var/cache folder) : doesn't work - Went to the compiler and noticed it was disabled to tried & running the compiler : also doesn't work

Any suggestions?

The full trace is

Mage registry key "_singleton/license/module" already exists

Trace:
#0 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(223): Mage::throwException('Mage registry k...')
#1 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(477): Mage::register('_singleton/lice...', false)
#2 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(21667): Mage::getSingleton('license/module')
#3 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('core_block_abst...', Array)
#4 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(2616): Mage::dispatchEvent('core_block_abst...', Array)
#5 /home/sytccoma/public_html/funketcomau/shop/includes/src/Mage_Adminhtml_Block_Dashboard_Diagrams.php(49): Mage_Core_Block_Abstract->toHtml()
#6 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(1966): Mage_Adminhtml_Block_Dashboard_Diagrams->_prepareLayout()
#7 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(27977): Mage_Core_Block_Abstract->setLayout(Object(Mage_Core_Model_Layout))
#8 /home/sytccoma/public_html/funketcomau/shop/includes/src/Mage_Adminhtml_Block_Dashboard.php(66): Mage_Core_Model_Layout->createBlock('adminhtml/dashb...')
#9 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(1966): Mage_Adminhtml_Block_Dashboard->_prepareLayout()
#10 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(27977): Mage_Core_Block_Abstract->setLayout(Object(Mage_Core_Model_Layout))
#11 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(27993): Mage_Core_Model_Layout->createBlock('adminhtml/dashb...', 'dashboard')
#12 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(27760): Mage_Core_Model_Layout->addBlock('adminhtml/dashb...', 'dashboard')
#13 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(27726): Mage_Core_Model_Layout->_generateBlock(Object(Mage_Core_Model_Layout_Element), Object(Mage_Core_Model_Layout_Element))
#14 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(27731): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#15 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(13941): Mage_Core_Model_Layout->generateBlocks()
#16 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(13866): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#17 /home/sytccoma/public_html/funketcomau/shop/includes/src/Mage_Adminhtml_Controller_Action.php(275): Mage_Core_Controller_Varien_Action->loadLayout(NULL, true, true)
#18 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Adminhtml/controllers/DashboardController.php(40): Mage_Adminhtml_Controller_Action->loadLayout()
#19 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(14015): Mage_Adminhtml_DashboardController->indexAction()
#20 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(18399): Mage_Core_Controller_Varien_Action->dispatch('index')
#21 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(17933): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#22 /home/sytccoma/public_html/funketcomau/shop/includes/src/__default.php(20705): Mage_Core_Controller_Varien_Front->dispatch()
#23 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#24 /home/sytccoma/public_html/funketcomau/shop/index.php(87): Mage::run('', 'store')
#25 {main}

Edited April 27.

There is a new trace which is a little different to the one I had before. The end result is the same. It calls for singleton/license/module and fails...

#0 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(223): Mage::throwException('Mage registry k...')
#1 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(477): Mage::register('_singleton/lice...', false)
#2 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Model/App.php(1316): Mage::getSingleton('license/module')
#3 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('core_block_abst...', Array)
#4 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Abstract.php(943): Mage::dispatchEvent('core_block_abst...', Array)
#5 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#6 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Abstract.php(577): Mage_Core_Block_Abstract->_getChildHtml('js_cookies', true)
#7 /home/sytccoma/public_html/funketcomau/shop/app/design/frontend/base/default/template/page/html/head.phtml(43): Mage_Core_Block_Abstract->getChildHtml()
#8 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Template.php(241): include('/home/sytccoma/...')
#9 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/base/d...')
#10 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#11 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#12 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#13 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('head', true)
#14 /home/sytccoma/public_html/funketcomau/shop/app/design/frontend/rwd/default/template/page/1column.phtml(43): Mage_Core_Block_Abstract->getChildHtml('head')
#15 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Template.php(241): include('/home/sytccoma/...')
#16 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/rwd/de...')
#17 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#18 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#19 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#20 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#21 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Cms/Helper/Page.php(137): Mage_Core_Controller_Varien_Action->renderLayout()
#22 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Cms/Helper/Page.php(52): Mage_Cms_Helper_Page->_renderPage(Object(Mage_Cms_IndexController), 'home')
#23 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Cms/controllers/IndexController.php(45): Mage_Cms_Helper_Page->renderPage(Object(Mage_Cms_IndexController), 'home')
#24 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Cms_IndexController->indexAction()
#25 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('index')
#26 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#27 /home/sytccoma/public_html/funketcomau/shop/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#28 /home/sytccoma/public_html/funketcomau/shop/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#29 /home/sytccoma/public_html/funketcomau/shop/index.php(87): Mage::run('', 'store')
#30 {main}

[theMageComp]

@sytc

Comment the code in this file:

Magento->includes->config.php

Then remove the cache folder data and try to open website.

[sytc]

Thanks for the suggestion.

I have tried it but the 2 code lines in the file were already commented out.

This method was unsuccessful.

[sytc]

I've updated my post thanks

[sytc]

This issue has been now resolved. The issue was related to an extension and its files being removed from the server due to an encryption which made the server antivirus to kick in.

Thanks for the help...