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Release Notes for JMRI 3.11.8 release

Date: June 15, 2015

From: Matthew Harris

Subject: Test version 3.11.8 of JMRI/DecoderPro is available for download.


This is a test release. Please post a note if you encounter any new or old bugs! And please back up your JMRI files before installing this, in case you want to go back to an earlier version.

This is the next in a series of test versions. We expect this series to end in the next JMRI production release around the middle of 2015.

Some of the changes involved are quite extensive. They may require a certain amount of experience before they are working well. Therefore, this test version should be considered experimental.

JMRI is now only available under the GNU General Public License. For more information, please see our copyright and licensing page.

Known problems with this release

None at release time.

New warnings for this version:

Older warnings

This release, and all later releases in this cycle, require Java 1.8 or higher. To use this or any later JMRI releases, you'll have to update the Java on your computer to Java 1.8 or higher.

The old DecoderPro has been removed from the distribution package and DecoderPro 3 has been promoted to be the only available DecoderPro version. Existing custom launchers that launched the old DecoderPro should continue to function without change or issue. If you absolutely cannot use the new DecoderPro user interface, we suggest using PanelPro instead, as with the exception of a different icon and different fixed buttons on the main window, PanelPro has an identical user interface to the old DecoderPro.

JMRI 3.11.3, and therefore this version, removes some files that were present in earlier versions. Failure to remove these can result in some portions of JMRI (notably the web server) failing to function correctly. If you are updating an existing JMRI installation to this version on Linux, you must remove any older version of JMRI or unpack this version of JMRI in an alternate location. The recommended update procedures for JMRI on Microsoft Windows (run the installer) and Mac OS X (open disk image and drag to final location, e.g. Applications folder) remove/replace the older version of JMRI, ensuring that these obsolete files are not present.

This release uses JDOM 2.0.5, which requires some code changes if you are directly calling the parts of JMRI that interchange XML objects.

There are now separate settings for the default Service Mode Programmer and for the default Ops Mode Programmer. If you're using two or more system connections, this lets you use one connection for ops mode (on track) programming and another connection for your programming track. If you're using two separate connections, you should go to the Defaults pane on the Preferences window and check that those defaults were set properly.

If you are making a direct connection to a Intellibox unit via serial or USB, you will have to reselect your preferences. See the Uhlenbrock support page for instructions.

If you are using an NCE USB adapter, you will have to reselect your preferences the first time you use a JMRI 3.11 version (if you set them using JMRI 3.10 or earlier). See the page on configuring JMRI for NCE for instructions.

The Save button in the Preferences window now only prompts for restarts if required. There may be instances when pressing save incorrectly fails to prompt to restart JMRI or prompts to restart JMRI when it should not.

Because of internal code changes, this version of JMRI may not be compatible with CATS 2.34 or earlier. Keep using JMRI 3.10 with CATS until there's a CATS update that says it will work with JMRI 3.11.

The XmlIO web service has been removed. All users who were relying on the XmlIO API are recommended to begin using the JSON API. inControl web throttle users are recommended to begin using webThrottle instead, or invest in devices that can support webThrottle, the iOS WiThrottle, or the Android Engine Driver.

Download links:

Please use these links for downloading:

Mac OS X:



Changes since test release 3.11.7:

Added the "jython/" sample script. If you are used to the original (old) DecoderPro startup screen with the individual buttons, launch PanelPro instead and have it execute this script from the preferences. It'll add the three original buttons. It won't change the logo or labels, but you'll get your buttons back.



New SPTCO-1969 signal system containing Semaphore, Searchlight and hybrid (semaphore with lower searchlight head) masts.
Does not reference the rulebook as web link because I cannot find it hosted anywhere. Mast files contain page references for the aspect appearances in the 1969 rulebook.
Provided by Suzie Tall, patch 1067

New / Updated decoder definitions


SFX Sound Decoders: Extended Series 6 updated for 16bits Sound Projects v3.0 (John McMasters)


FD-R Basic 2 new definition provided by Pierre Billon, patch 1066


Added new definition for: 1917 (HO Atlas S2/S4) (Alain Le Marchand)