Content Downloader Release Notes

The latest version is available for download from the Liaison front page and is recommended for all customers to ensure they are running the most secure version.

June 2022

Version 4.4.29

This is the latest version.

  • Upgrade Struts to the latest version v2.5.30
  • Bug fix: Login page displays '{0}.' after incorrect login

April 2022

Version 4.4.28

This version includes:

  • Authentication Over Unencrypted Channel

The local admin website will ONLY be accessible by HTTPS, and by default, the local website is only accessible by:

The access IP pattern can be manually updated by the change the “conf/” after installation, below are examples:


After adding this line, restart the RCD software, then the local website will be accessible by:



February 2022


This version replaces the log4j with another logging solution Logback to eliminate the security concern, and no change has been performed to the application functionality.

  • Replace log4j with Logback

July 2020

Version 4.4.1

Due to the logj4 library vulnerability, we decided to generate a new RCD version to fix this vulnerability.

  • Memory leak
  • Several minor securities fix.

August 2021

Version 4.4.0

This version contains two breaking changes:

  • Migration of RCD from Oracle JDK to OpenJDK Amazon Corretto 11.
  • We stopped supporting customers with x86 systems, so it is essential to give them the possibility to download the old version of the RCD client (4.3.0)
  • htaccess file has been removed. To update the list of allowed IP addresses client needs to add new parameter ip.patterns to the file.
  • Security enhancement: Added a security warning on the RCD proxy configuration page.

Version 4.3.0 (Aug 2019)

  • Security enhancement to disable remote access unless enabled (see details here)
  • Security enhancement to prevent password being returned
  • Security fix to client admin page
  • Security enhancement to prevent cross-site forgery request
  • Reduce memory usage (compared to v4.2)
  • Increase audit log in exported logs

Version 4.2.40 (Mar 2019)

  • Support new Limited photo file size - for pictures customers who want a base image limited to approximately 3500 maximum pixels
  • Mixed audio rendition [MPEG-4 HD 1080 - 1920x1080 (Mixed audio)]

Version 4.2.2 (May 2018)

  • Support removed for: Windows XP, Windows Server 2003 and 2008, Linux 4.10, Mac OS 10.12 and below
  • Support added for: Windows 10, Windows Server 2016, Linux 4.14/3.6, Mac OS 10.13 or above 
    • Includes latest Java 8 release supporting fully secure HTTPS retrieval from AWS.  As of June 2019 earlier versions no longer support HTTPS
    • Fix security vulnerability
    • Enable SSL certification validation

    Version 4.1.5 (Aug 2016)

    • Correct log file location for Linux
    • Correction for Windows auto-update
    • Correct concatenation of files on restart
    • Initial release with HTTPS support -- NOW DEPRECATED, update to latest version for HTTPS
    • Final release to supportWindows XP, Windows Server 2003 and 2008, Linux 4.10, Mac OS 10.12 and below