Magento :: “Could not determine temp directory, please specify a cache_dir manually”

Symptoms Magento throws “There has been a problem processing your request” error. The following error is logged under var/reports/ or shown on any page: Cause Magento can not write cache to var/cache/ and var/tmp/ folders under Magento root directory. Either the directories do not exist or webserver can not write to these directories. Solution Make sure that var/cache/ and var/tmp/ folders exist under Magento root directory. If you can not find it, simply create it… Read the rest