Cant resume. Append/Restart not permitted, try again.

Whenever i try to resume an upload I get this error

    Opening data connection IP: 216,240,137,91,174,219 PORT: 44763.



    APPE RS.zip



451 RS.zip: Append/Restart not permitted, try again.



    REST 289554432



350 Restarting at 289554432. Send STORE or RETRIEVE to initiate transfer



    STOR RS.zip



451 RS.zip: Append/Restart not permitted, try again.

Im using ver 1.0.981 and Win XP Pro

Im uploading rather huge files and i cant afford to lose a 1.6 GB upload 260 MB into it and have to start over. Anyone have a suggestion?

Anyone have a suggestion?
Yes, tell the server admin to give you the right to append uploads ... it's not SmartFTP's fault.