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Cannot Launch FTP Voyager JV or Web Client Pro on OS X Mavericks  -  KB Article #2152

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It is not possible to launch FTP Voyager JV or Web Client Pro on OS X Mavericks. Even if the latest Java version is installed correctly, OS X Mavericks might issue a warning that the app is from an unidentified developer. A communication exception may also occur between the browser and the Web Client Pro applet.


This is a known issue on Mac OS X. As a workaround, follow these steps to be able to launch FTP Voyager JV and to enable the communication between the browser and the Web Client Pro applet:

  1. Click System Preferences on the Apple menu.
  2. Click Security & Privacy.
  3. Unlock the page on the General tab to enable editing the settings.
  4. Select Anywhere from the Allow apps downloaded from options.
  5. Double-click FTP Voyager JV's JNLP file that is downloaded, and then click Open, or run Web Client Pro.

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