Can not upload files

+- System -----------------------------
Microsoft Windows XP

+- System -----------------------------
Microsoft Windows XP Professional
Service Pack 2 (Build 2600)

CPU Speed : 2793 MHz
Total Memory : 1022 MB
Free Memory : 523 MB

+- SmartFTP ---------------------------
Version : 3.0.1021.12
Time Stamp : 2008-08-06 16:48:44
Platform : x86
Id : 400064497
Days in use : 49

+- Application DLL --------------------
sfFTPLib.dll : 1.5.13.41
sfFavorites.dll : 1.0.17.12
sfFavoritesShellExtension.dll : 1.0.1.13
sfTransferQueue.dll : 1.0.14.12
sfFTPShellExtension.dll : 1.0.12.12
SmartFTPPS.dll : 3.0.1021.12

+- Language ---------------------------
SmartFTP.exe : 3.0.1021.12

+- Internet Explorer ------------------
Version : 7.0.5730.11

+- Winsock ----------------------------
Winsock : 2.2



2.
[00:55:20] MLSD
[00:55:20] 150 Accepted data connection
[00:55:20] 226-Options: -a -l
[00:55:20] 226 2 matches total
[00:55:20] 213 bytes transferred. (1.48 KB/s) (140 ms)
[00:55:50] MLST 7-(63).jpg
[00:55:50] 550 Can't check for file existence
[00:56:20] MLST 7-(63).jpg
[00:56:20] 550 Can't check for file existence


3. Transfer Queue Log
[00:56:50] Remote file exist check: "7-(63).jpg".
[00:56:50] MLST 7-(63).jpg
[00:56:50] 550 Can't check for file existence
[00:56:50] PASV
[00:56:50] 227 Entering Passive Mode (66,7,193,237,124,244)
[00:56:50] Opening data connection to 66.7.193.237 Port: 31988
[00:56:50] STOR 7-(63).jpg
[00:56:50] 553 Disk full - please upload later
[00:56:50] 0 bytes transferred. (N/A/s) (0 ms)
[00:56:50] Transfer failed.



This used to work during 30-day evaluation but stopped after I purchased a SmartFTP today. I can download files no problems, but if I drag files from the local to remote windows (upload), nothing happens. I saw the mark of "ZZ..." next to the image in the Transfer Queue box.

I would appreciate your help on this one.
Thanks.

There is no more free space on the server:
553 Disk full - please upload later

Please contact your web hosting provider.