Issues with Rational Functional Tester while connecting to FTP

Hi guys,

There was a tool which was developed by someone in RFT using java a long back , it was working fine then someone devcided that OS has to be changed to windows 7 , so i exported the project and imported it back to the new windows 7 machine and the code taking care of FTP is throwing an error.

Is there any specific .JAR file or something which we need to add or is there any other native issue in windows 7 while using FTP.

Any help is appreciated.