Error 550 and 553

help I'm getting these errors, here's what it says:
[15:07:33] 550 /bigvalleypark@sbcglobal.net/forums/admin/pagestart.php: not a plain file.
[15:07:33] PASV
[15:07:33] 227 Entering Passive Mode (68,142,234,79,202,169)
[15:07:33] Opening data connection to 68.142.234.79 Port: 51881
[15:07:33] STOR pagestart.php
[15:07:33] 150 Opening BINARY mode data connection for /bigvalleypark@sbcglobal.net/forums/admin/pagestart.php .
[15:07:33] 2281 bytes transferred. (47.3 KB/s) (47 ms)
[15:07:34] 226-You are using 4.2% of your subscribed disk space
[15:07:34] 226 You have 4791.028 MB of space available
[15:07:34] SIZE pagestart.php
[15:07:34] 213 2281
[15:07:34] MKD /bigvalleypark@sbcglobal.net/forums/cache
[15:07:34] 257 "/bigvalleypark@sbcglobal.net/forums/cache" new directory created.
[15:07:34] CWD /bigvalleypark@sbcglobal.net/forums/cache
[15:07:34] 250 CWD command successful.
[15:07:34] PWD
[15:07:34] 257 "/bigvalleypark@sbcglobal.net/forums/cache" is current directory.
[15:07:34] TYPE A
[15:07:34] 200 Type set to A.
[15:07:34] PASV
[15:07:34] 227 Entering Passive Mode (68,142,234,79,140,112)
[15:07:34] Opening data connection to 68.142.234.79 Port: 35952
[15:07:34] LIST -aL
[15:07:34] 150 Opening ASCII mode data connection for /bigvalleypark@sbcglobal.net/forums/cache/-aL .
[15:07:34] 9 bytes transferred. (145 bytes/s) (62 ms)
[15:07:34] 226 Transfer complete.
[15:07:34] Remote file exist check: ".htaccess".
[15:07:34] TYPE I
[15:07:34] 200 Type set to I.
[15:07:34] SIZE .htaccess
[15:07:35] 550 Permission denied on server. You are restricted to your account.
[15:07:35] PASV
[15:07:35] 227 Entering Passive Mode (68,142,234,79,206,54)
[15:07:35] Opening data connection to 68.142.234.79 Port: 52790
[15:07:35] STOR .htaccess
[15:07:35] 553-The name you specified is not allowed.
[15:07:35] 553-Names must contain only ASCII letters (a-z,A-Z), digits (0-9), underscore, dot and dash.
[15:07:35] 553-Names must not start with a dot (.) or dash (-).
[15:07:35] 553-For additional info please visit:
[15:07:35] 553-See http://help.yahoo.com/help/us/webhosting/gftp/
[15:07:35] 553
[15:07:35] Transfer failed.
[15:07:35] CWD /bigvalleypark@sbcglobal.net/forums
[15:07:35] 250 CWD command successful.
[15:07:35] PWD
[15:07:35] 257 "/bigvalleypark@sbcglobal.net/forums" is current directory.
[15:07:35] TYPE A
[15:07:35] 200 Type set to A.
[15:07:35] PASV
[15:07:35] 227 Entering Passive Mode (68,142,234,79,206,54)
[15:07:35] Opening data connection to 68.142.234.79 Port: 52790
[15:07:35] LIST -aL
[15:07:35] 150 Opening ASCII mode data connection for /bigvalleypark@sbcglobal.net/forums/-aL .
[15:07:35] 1222 bytes transferred. (18.9 KB/s) (63 ms)
[15:07:35] 226 Transfer complete.

Hi, your server don't allows the use of .htaccess files. And you must disable -aL at Settings->Transfer->Directory Listing Options.