while development is ongoing @ magento developer need to see what’s going wrong …while we see Exception printing is disabled by default for security reasons. … such message.
to enable this error display follow
1. Go MagentoRoot/errors/
2. Copy local.xml.sample – and create local.xml @ MagentoRoot/errors/local.xml
Now the error message will show and you can easy debug the system. Very easy 
hah
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Thanks ..
Fatal error: Maximum execution time of 60 seconds exceeded in D:\wamp\www\project\opensource\magento\lib\Zend\Db\Statement\Pdo.php on line 228
this error i got when am install.
There has been an error processing your request
Exception printing is disabled by default for security reasons.
Error log record number: 104826717
You can use php.ini to increase the Maximum execution time
To enable checking the Exception try rename the file magentofolder{www}/errors/local.xml.sample – to – magentofolder{www}/errors/local.xml
Thanks!
Please i am new to Magento and i tried installing it on my localhost but i got this error after going through your tutorial on how to make errors visible.
Error in file: “C:\wamp\www\magento\app\code\core\Mage\Catalog\sql\catalog_setup\mysql4-install-1.4.0.0.0.php” – SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry ’3-display_mode’ for key 2
Trace:
#0 C:\wamp\www\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(374): Mage::exception(‘Mage_Core’, ‘Error in file: …’)
#1 C:\wamp\www\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(260): Mage_Core_Model_Resource_Setup->_modifyResourceDb(‘install’, ”, ’1.4.0.0.21′)
#2 C:\wamp\www\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(224): Mage_Core_Model_Resource_Setup->_installResourceDb(’1.4.0.0.21′)
#3 C:\wamp\www\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(153): Mage_Core_Model_Resource_Setup->applyUpdates()
#4 C:\wamp\www\magento\app\code\core\Mage\Core\Model\App.php(363): Mage_Core_Model_Resource_Setup::applyAllUpdates()
#5 C:\wamp\www\magento\app\code\core\Mage\Core\Model\App.php(295): Mage_Core_Model_App->_initModules()
#6 C:\wamp\www\magento\app\Mage.php(596): Mage_Core_Model_App->run(Array)
#7 C:\wamp\www\magento\index.php(78): Mage::run(”, ‘store’)
#8 {main}
Worked like a charm, thanks for this info!!!
Short and simple but very usefull tutorial.
Thanks very much.
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thank you sir
issue solved.Isalm May you live long.
excellent – you are cool
Thanks man
You can simply rename local.xml.sample to local.xml