Onyx must be in OnyxPLUS mode.
Select the "Settings" tab, under the "Network Settings" section tick "Enable ONYXPlus Connection"
Click on "Save Settings".
On the "OnyxPLUS settings" tab, under "FTP settings" section enable FTP.
Please enter the following:
Username: ONYX
Password: onyx
Click on Apply
The FTP server on the OnyxPLUS server must point to the Onyx directory (c:\Program Files\Datatex\onyx)
Full access rights must be set up on the FTP Server for the Onyx user (read,write and create of directory/files)