By default, Magento does not register messages about errors and exceptions, so if something fatal happens, the sysadmins are usually in trouble as there is no log, error or debugging messages. To turn on the logging, navigate to System > Configuration > Developer > Log Settings and set the «Enabled» option to «Yes» To Enable Magento error Display just go to magentorootfolder/errors. Just rename the local.xml.sample to local.xml