Could you help me understand what this error log is telling me?
{21926:Mon, 17 Jun 2013 17:21:31 GMT}
WARNING: mkdir() [function.mkdir]: Permission denied in /home/perioddr/public_html/zen/zp-core/zp-extensions/auto_backup.php on line 76
mkdir called from auto_backup::timer_handler (auto_backup.php [76])
from call_user_func_array (unknown)
from zp_apply_filter (functions-filter.php [148])
from include (image.php [9])
from index.php [108]