zone alrm still blocking ftp

even though I have the latest versions of smartftp and zonealrm. Zonealrm is still blocking smartftp from connecting to the web space.

The error message is:
No connection could be made because the target machine actively refused it.

Smartftp works ok when zone alarm is turned off.

Is there a work around or cure for this problem. If not have you spoken zonealarm about it.

Thanks in advance
Dai