Release Notes for JMRI 2.3.4 release

Date: October 8, 2008

From: Bob Jacobsen

Subject: Test version 2.3.4 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 fourth in a series of test versions.

JMRI 2.3.4 was released to fix a Windows-related problem in JMRI 2.3.3, which it replaces. The JMRI 2.3.3 features are listed in its release note.

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.

New warnings for this version:

Warnings from older versions:

Starting with this test release, by default JMRI is allowed to use up to 200MB of memory (up from a limit of 60MB or 64MB previously). If this is more memory than you have available, and you notice JMRI slowing down a lot, please let us know.

Staring with this test release, JMRI now builds the classpath (the list of .jar libraries used by the program) dynamically. We'll use this in the future for plug-ins and other features, and other platforms have been doing this for a while. If you have added any .jar files to your JMRI program directory, they may cause problems when the program is starting. Also, if originally installed a very old version of JMRI, there might still be files around that can cause this problems. If so, you can fix it by moving aside those extra .jar files from the JMRI program directory. For more information on this, please see this discussion on the JMRI Users group.

JMRI is moving toward requiring Java 1.5 or later. Certain new features may not work if you are using an earlier version of Java. To see JMRI's future plans for this and other compatibility issues, please see the JMRI technology roadmap.

JMRI no longer supports NCE AIU broadcasts. This change was needed so that JMRI could reliably read certain CV values. We recommend that if you use NCE AIUs, that you upgrade the command station EPROM to version 2007 or newer and turn off AIU broadcasts. Code has been added to detect if AIU broadcasts are enabled, and if so a warning message will appear at startup requesting that AIU broadcasts be turned off for proper operation of the JMRI programs.

Indexed CVs will not be included in any printouts for this release.

QSI CV 56.129 Engine ID Access is not supported in this release.

While programming QSI decoders in Ops mode, it is necessary to disable CV 62 QSI Control (Verbal Acknowledgement), otherwise the writes will fail.

QSI CV 64 CV Numeric Verbal Readout currently does not work for indexed CVs.

Download links:

Please use these links for downloading, including the "?download" at the end. That adds to SourceForge's advertising statistics, which makes them happy to host our stuff.

Mac OS X:



Changes since test version 2.3.3:

The Windows installer now removes specific older Java library (.jar) files if present. Also, Matt Harris updated it to handle Vista security and the administrator account.

Fixed some links in help pages.

Dick Bronson updated the decoder definition for the RR-CirKits TC-64.