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Release Notes for JMRI 3.11.3 release

Date: February 15, 2015

From: Bob Jacobsen

Subject: Test version 3.11.3 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:

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.

This JMRI 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 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.

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.

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.

Because of internal code changes, this version of JMRI is not 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 3.11.2:

Ken Cameron fixed a problem (present since 3.11.1) that prevented the NCE Consist tool window from opening.

Fixed a stall occasionally encountered when running a locomotive to measure a speed table via a LocoNet connection.

Fixed a problem where, if the decoder definition causes DecoderPro or DecoderPro3 to select a non-default programming mode, that wasn't properly being displayed.

Randall Wood fixed a problem that would cause an exception when starting without an existing configuration.

Hardware Support

Uhlenbrock Intellibox
Bachrus Speedometer

Dennis Miller made the following changes:


Dave Sand improved the SPTCO-1930 definitions.

Egbert Broerse improved the signal documentation.

Suzie Tall provided additional signal icons

New / Updated decoder definitions

Dave Heap updated the Function Mapping page to emphasise that "label" and "tooltip" attributes should not be added to a "fnmapping" element (they are ignored).


Xavier Chazelle contributed a decoder definition for the N scale Fleischmann "Leig einheit" F830681 double unit of van equipped with a Fleischmann-specific dual decoder for opening or closing doors


Added definition for Bachmann On30 Whitcomb 50-Ton Center-Cab (DCC Sound On-Board, Plug-and-Play Sound Module) (Alain Le Marchand)

Fixed a problem (originating in the Great SoundTraxx renaming that took place in JMRI 3.11.1) that prevented some Soundtraxx decoders from being recognized


Dave Heap made the following changes:


Michael Mosher updated the TCS WOW definitions.


Added Trix 66840 (Bjørn Kvisli - Alain Le Marchand)


Nigel Cliffe and Mark Waters did a lot of work on the Zimo decoders.


Dan Boudreau made the following changes to operations:


Fixed a problem where the Block Table would throw errors at various times when JMRI was in a locale where decimal numbers are written 0,00 (as opposed to 0.00).


The parameters for ramping speed changes used by Warrants and the Speed Map are now accessible through Preferences.

Clicking the Save button now prompts to restart only if the preferences have changed and if the change requires a restart. (Randall Wood)

Closing the Preferences window now prompts to save or discard preferences if the preferences have been changed. (Randall Wood)

Web Server

Fix an issue preventing the Web Throttle from handling certain turnouts. (Randall Wood)

Fix an issue preventing the Web Throttle from loading rosters. (Randall Wood)

Fix an issue preventing the Web Throttle from setting routes. (Ken Cameron)

Remove documentation and examples that use the XmlIO protocol.

The Web Server has been upgraded from Jetty 8.1.11 to 9.2.7. This is expected to improve performance, especially on constrained devices such as the Raspberry Pi. (Randall Wood)


LinkingLabels will now restore a minimized frame on Windows (already worked this way in Linux) (mstevetodd)

Add ability to specify the default location for new configuration profiles. (Randall Wood)