Transfer Failed in web-level directory only

I'm updating a site for a friend. I've connected successfully to the server, but every time I try to upload a file the the www-level directory, I get "Transfer Failed."
I don't get this problem when I try to upload to any other directory. Maybe the answer is simple, but I'd appreciate the help.

LOG:

[16:46:43] Remote file exist check: "test.htm".
[16:46:43] TYPE I
[16:46:43] 200 TYPE is now 8-bit binary
[16:46:43] SIZE test.htm
[16:46:43] 550 Can't check for file existence
[16:46:43] File size check (SIZE) failed. File not found or permission denied.
[16:46:43] PORT 192,168,1,100,10,98
[16:46:43] 200 PORT command successful
[16:46:43] STOR test.htm
[16:46:43] 553-Can't open that file: Permission denied
[16:46:43] 553 Rename/move failure: No such file or directory
[16:46:43] MDTM 20030212003946 test.htm
[16:46:43] 550 Can't check for file existence
[16:46:43] TYPE A
[16:46:43] 200 TYPE is now ASCII
[16:46:43] PORT 192,168,1,100,10,100
[16:46:43] 200 PORT command successful
[16:46:43] MLSD
[16:46:43] 150 Connecting to port 5023
[16:46:43] 447 bytes transferred. (N/A/s) (0 ms)
[16:46:44] 226-Options: -l
[16:46:44] 226 4 matches total
[16:46:44] Transfer failed.

Hello..

Yes it's simple. Permission denied:
[16:46:43] 553-Can't open that file: Permission denied

Regards,
SmartFTP