FTP Voyager JV Not Available In Mac OS X < 10.4 - KB Article #1714Related Articles --
FTP Voyager JV requires the use of Java SE 6, for proper operation. Java SE6 is the current version recommended by Sun, the developers of Java, and is openly available for Windows and Linux users. However, Apple does not allow users to directly install new versions of Java - it distributes Java via its own Software Update service, and often does so behind the release schedule of Sun.
Mac users are required to have at least Mac OS X 10.5, which is the first version of the Mac OS which makes Java version 6 available. Due to Apple's release schedule for Java, FTP Voyager JV is not available to users running OS X 10.4 and previous. The Web Client is fully compatible with OS X.