4
644 should be safe, you could just ignore the message.
If the error message is really buging you, you could modify the admin.php located in your root directory
find [under switch ($op)]
if ( is_writable(XOOPS_ROOT_PATH."/mainfile.php" ) ) {
xoops_error(sprintf(_WARNINWRITEABLE,XOOPS_ROOT_PATH.'/mainfile.php'));
echo '
';
}
comment out the four lines -
be warned you must manually check if the mainfile.php has really been chm'd to 644