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I have uninstalled web from extension and installed it again since than I am getting this error while i try to open the admin. Front end is working fine.Please help

user2084269
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  • Hey, My guess is that you did not uninstall it fully. So it is trying to load a Singleton twice. That or something is misconfigured in the Modules .xml files. Take a look and try to clean it up. – SH- Apr 14 '13 at 18:02
  • i have checked everything and also deleted the xml file of this extension in module folder – user2084269 Apr 14 '13 at 18:46

2 Answers2

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It is very important to clear the Compiler cache and after that turn it on in backend of Magento.

Clear the cache:

SSH:
find ./var/cache -type f -delete
FTP: 
mrm -r ./var/cache ; mkdir ./var/cache

Disable/Clear Magento compilation

SSH:
php -f shell/compiler.php -- disable
php -f shell/compiler.php -- clear
FTP:
mv ./includes ./includes.unused
Andre Silva
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croman91
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Ok, so Debug. Go to app/Mage.php. Find register function add in 

if ($key == '_singleton/VladimirPopov_WebForms_Model_Observer'){
    Mage::log(debug_backtrace(false), null, 'backtrace.log');
}

Do this right before if (isset(self::$_registry[$key])) {

Then go to app/var/log/some_filename.log. There should be two entries. One is right and one is wrong (read duplicate). That should help you to find the offending file/function.

NOTE: Be sure to backup app/Mage first and restore it after. This is a critical file.

SH-
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  • I have the file bit did not understand what do you mean by (read duplicate).is there any way to send you the file – user2084269 Apr 14 '13 at 20:04
  • Just pick an uploading site and drop the link. – SH- Apr 14 '13 at 20:12
  • Oops, I edited my command. Way too much info in that log. You should probably delete it. Replace with the new one. – SH- Apr 14 '13 at 20:36
  • after putting the code you have asked and again installing the extension I am getting this error."Server error The website encountered an error while retrieving http://magento-36664-riki.vpsapps.net/index.php/admin/dashboard/index/key/e365a503d56c8f0877f4f6420476a942/. It may be down for maintenance or configured incorrectly." – user2084269 Apr 14 '13 at 20:42