Drupal file_copy won’t work outside of the Drupal installation directory

The selected file could not be uploaded, because the destination is not properly configured This "feature" has bitten me before. It's one of those annoying Drupal things which would be fine if the error message wasn't so misleading. What's happening is that file_copy() calls file_create_path() <?php function file_copy(&$source, $dest = 0, $replace = FILE_EXISTS_RENAME) { $dest = file_create_path($dest); ?>   While file_copy() doesn't declare …