500 'SITE host:33': command not understood

I am new to SmartFTP. I am using it to transfer files over a VPN. I have successfully created the VPN and am able to loggin to the FTP site for a second but then I get disconnected (see log below).

I have tuned off all firewalls, anti virus, uninstalled SmartFTP and reinstalled and lowered all security settings. After trying everything I could think of, I logged into my PC under a different profile with the same rights and I was able to successfully gain access and stay connected.

Any ideas???

[13:20:34] SmartFTP v2.5.1008.27
[13:20:34] Resolving host name "bizapp1a"
[13:20:36] Connecting to Port: 33 [13:20:36] Connected to bizapp1a.
[13:20:37] 220 Microsoft FTP Service
[13:20:37] USER Telecom
[13:20:37] 331 Password required for Telecom.
[13:20:37] PASS (hidden)
[13:20:37] 230 User Telecom logged in.
[13:20:37] SITE bizapp1a:33
[13:20:37] 500 'SITE bizapp1a:33': command not understood [13:20:37] Cannot login waiting to retry (30s)...