Magento install error - Exception printing is disabled

Here is a known error which can occur when installing Magento:

There has been an error processing your request
Exception printing is disabled by default for security reasons.
Error log record number: XXXXXXXXXXXXXXX

Here is the solution:

  1. Navigate to the "errors" folder.
  2. Change local.xml.sample to local.xml
  3. You should now see a new list of crazy errors all over the Magento page - this is okay.
  4. Open magento/lib/Zend/Cache/Backend/File.php and look for:
    protected $_options = array(
    'cache_dir' => 'null',
  5. Change it to:
    protected $_options = array(
    'cache_dir' => 'tmp/',
  6. Save it.
  7. Now the final step is to go create a tmp folder in the root Magento folder.
  8. That's it.