you could also try adding:
chmod 777 www
(where www is your web folder located in your box, it could be /HD_a2/www, or /HD_a2/ffp/path_to_web_folder_www etc...)
add the chmod code in your fun_plug file - up top under the first 'echo' command
or near the bottom where it says #run commands
if that doesn't work, you will have to either ftp, ssh, telnet, putty, etc., into it

good luck!