cannot upload or delete

I have recently purchased a Smart FTP 3.0 licence plus upgraded to Windows XP SP3 - today I can log on to FTP server but cannot get any interaction - NO file uploads successful and NO file deletions successful either. I have reinstalled Smart FTP but no luck.

SYSTEM INFO

+- System -----------------------------
Microsoft Windows XP Professional
Service Pack 3 (Build 2600)

CPU Speed : 1396 MHz
Total Memory : 1271 MB
Free Memory : 645 MB

+- SmartFTP ---------------------------
Version : 3.0.1023.4
Time Stamp : 2008-09-30 01:00:16
Platform : x86
Id : 400086699
Days in use : 468

+- Application DLL --------------------
sfFTPLib.dll : 1.5.14.6
sfFavorites.dll : 1.0.19.4
sfFavoritesShellExtension.dll : 1.0.1.14
sfTransferQueue.dll : 1.0.16.4
sfFTPShellExtension.dll : 1.0.14.4
SmartFTPPS.dll : 3.0.1023.4

+- Language ---------------------------
SmartFTP.exe : 3.0.1023.4

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

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

Duplicate. Please contact your web hosting provider for assistance.