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Was using JMRI to program some locos when the computer suddenly decided to do some update. Closed JMRI and waited for the update conclusion. Then reloaded JMRI and discovered that the roster file was gone. Absolutely empty. Did a couple of reloads, same problem. I am hoping that the file is still in the computer, but the link to load it vanished. Is there a specific name for the roster file that I can reload if it is indeed there? Any suggestions or ideas greatly welcome. Roger Thomas Note: This is a club roster with over 300 locos.

I have a regular problem with pop-ups from JMRI not being visible, which then renders JMRI unusable until restarted. This is on a raspberry pi originally built using the image provided. Access is via VNC. I have version: PanelPro version 5.10+Rca461bd266 starts under Java 17.0.14 on Linux aarch64 v6.6.74+rpt-rpi-2712 at Mon Apr 21 08:52:21 BST 2025 [main] The display is wayland, and the hardware is an 8g Rasberry PI 5 (but I also saw this on my old rasberry pi 4) The behaviour appears to be random, I just had it when trying to write this by going to "Help -> About PanelPro" but on restart it's fine. I see it most when editing LogixNG when it's popping up a warning that I need to complete editing a logixng before exiting that edit. Any ideas? Thank you Chris

Is there a way to have a selected route show up as a different color on the track layout screen?

Greetings! I am still in the design stage for my layout, and am looking into the signaling options. As I understand it, the central computer only tells a signal decoder to show an allowing aspect or not, and it its up to the decoder to determine which aspect is applicable, using status messages it has heard over the LocoNet/LCC. A signal decoder also can broadcast its new state whenever it changes aspect. I have three questions: 1. Can the central computer instruct the decoder *which* aspect to display or is it only a binary go/stop order? If yes: how many different aspects can be ordered? 2. When a decoder broadcasts its new state, does it specify *which* allowing aspect it is showing, or is it only a binary go/stop? If yes: how many different aspects can be communicated? 3. In many signaling systems, a signal can give a proceed aspect for a train movement or a shunt movement. How does the central tell the decoder which of these to use? (In the signaling system I am modelling, shunting is governed by separate lights, which may be intergated into the main signal or be part of a separate dwarf/shunt signal.) Thanks in advance

Can a single CSB1 run trains and control turnouts? I would like to power the turnouts from a 2nd motor shield piggy-backing on top of the first. My guess is to designate the turnouts in the arduino my layout.h file. i am new to DCC, so any help would be great ~gary

When a point/turnout is changed in JMRI connected to the layout using MQTT it publishes a message whose topic is of the form ../turnouts/ T101 I have a number of arduino nodes controlling points and would like something like ../turnouts/node2/T101. so the node can subscribe only to topics that are relevant. I have worked out how to add and persist custom properties to the turnout object but how do I change the published MQTT topic to reflect these.

So after being away for a few weeks, I’m back down in the basement with my new install on a new laptop. Everything seems to be set, but I cannot identify a locomotive under either identify or-new Loco by decoder type read. I constantly get a 301 stopping due to error no locomotive detectived message. I’m using NCE system and I can still run trains. When I click on identify or through the new Loco tab the status light on my powerhouse blinks rapidly for several minutes and then the error message appears. I was scrolling through older messages and thought that maybe I had a com port ID problem, but since the LED on my powerhouse flashes, would that be ruled out? I have my system hooked up to the laptop through a USB port, which goes through an adapter cable, all of this was working When I replaced the laptop.Suggestions of which way I need to look for an issue appreciated. Thanks, Bruce and Mt. Airy, Maryland

Good afternoon, I need help. I have JMRI 5.10 on my laptop. I am running Windows 11 and have Java 17. Sprog ll is my interface. I wanted to test a loco on the programming track, however, I cannot get the power button to go from pale green to green. In fact it does not respond at all. I have reinstalled Decoder Pro and still no joy. Am I doing something wrong? Regards, Dennis Dennis G Edgar Lead Auditor 133839 email: dennisedgar7@... mobile: 083 6470569

Is there a way to copy the CVs from one loco in a roster to another? All my locos have ZIMO decoders and at least the initial setting for ABC should be the same, so when I introduce a new loco I'd like to just copy an existing locos settings. Is there a way? Or a template so that the default for new locos is ABC, stopping distance X, etc... I have a similar situation for sound. Two locos, identical chips both with sound. I want to copy the sound settings from one to the other. Can I? Or do I have to write them all down and do it by hand? Thanks Chris

I have the latest revision of DecoderPro running on my desktop PC, which is connected to a SPROG3 command station. When I press the 'Read type from decoder' button, the message in the lower left-hand corner of the 'Create New Loco' window doesn't change from 'Read MFG ID - CV 8' until the timeout message appears. The LEDs on the SPROG3 box do not flash. The USB connection to the computer is good. I've run the locomotives using my Prodigy power supply with no problems. This issue first occurred on April 27, 2025. Last week, it worked fine. I was able to read data from a new locomotive. I've tried it on multiple locomotives with the same result. Any thoughts would be appreciated. Thanks, Scott

I have several logixes related to the same turnout. I was wondering if there is a way to combine them easily into one new logix (other than retyping them). Ulrich

When i use jmri the system console info and loconet monitor data goes into files in the log directory inside the directory holding the profile that was opened. what happens to the data that occurred first when the 3 message files are filled to capacity and the file is bigger than 3 files worth-is it lost? will the other log file(whose name i forget) contain all the system console data no matter how big it gets?- is any data lost if too big? when i close the session and open a new session what happens to the data of the previous session.? tony

I have been trying to track a specific locomotive using the Block Contents variable. I am able to place a tag object on the layout for the block occupied by a loco (using BDL 716) and the icon illuminates with the text. I then place an icon in the adjoining block and as the loco traverses this block the initial icon goes away and the current icon in the new block illuminates as it should. When I reverse the direction of the loco, both icons stop illuminating. It seems like I am not setting the block variables correctly such that the Icon contents persist. Any suggestions? Also, can Logix be used to initiate the Block Contents tracking if I always park the loco in the same block when I start the system? -- Rodney McNeill

Recently after some tinkering i was able to get my JMRI up and running with the layout. My main use will be for the wifi throttle capabilities to run trains on my phone. For some reason I'm unable to connect to the server on my phone. Sometimes the server will pop up in the app and sometimes it wont and i have to search for it. Whenever i try to connect to it though it says, "failed to connect" and then reads out the IP address. I believe my issue is that the IP address on my phone is different from the one on the computer (which hosts the server so its the same as JMRI). What i dont understand is that they're both connected to the same WIFI. How am i supposed to connect to it, if the IP address on my phone is different. They need to be the same or it wont let me connect. Any help would be appreciated

Hi everybody, for many years I have had several locomotives that were equipped with QSI decoders. Recently I needed to reset one of them and Decoder Pro didn’t seem to recognize them as QSI. I ended up doing it on a generic CV configuration. Yesterday, it happened again with a different locomotive. My programming track is powered with a sprog. I’m pretty sure that QSI went out of business. So do y’all know if this is something? I’m just gonna have to deal with now? Larry Sloan Eat, Sleep, Work, Play with trains

It’s probably been asked many times before but could someone tell me why, when opening PanelPro and selecting the Roster tab, the top of the selection list is “Open DecoderPro” rather than simply being able to select the roster? I assume the roster location has somehow been changed. Any help to get this resolved will be greatly appreciated. Thanks in advance, David.

Hi JMRI user group, This little black duck in St. Clair, Sydney, finally got some signalling up & running, sort of... Is there any known issue[s] with JMRI and NCE that would cause JMRI to correctly show the aspect of a given [3 aspect] signal, BUT have the equivalent physical signal on my layout inconsistently update [or not] its aspect? Note I said 'inconsistently', because some of the time a given signal will update correctly, another time not. [And it is not always the same signal that fails to update; it all appears rather random.] SOME DETAILS Simple loop running at present under test. Approximately 15 signals in the large-ish loop. Currently running LOGIX programmed to have one signal RED, one signal AMBER, the remainder GREEN. Logix operates correctly 'on screen' or 'virtually'. I have tried various ways of programming the signal sequence, but always run into the same problem of inconsistent updating of aspects. HARDWARE - all NCE NCE PowerPro, NCE BD20 sensors [all track 'sensed'], NCE AIUs, their channels switched via the sensors. Each signal is connected to an NCE 'Light-it' stationary decoder acting as its driver. ADDITIONAL OBSERVATIONS Signals, when manually operated from the PC [JMRI signal table] update as directed 'on screen' & 'on layout', no failures. AIU on board channel indicators [LEDs] operate correctly and cause JMRI sensor table to shown sensors as 'active' or 'inactive' as expected. At one point I thought there may be data loss occurring through the 'bus' between the NCE system and the signal drivers, but this doesn't appear to be the case. I say this because I have one of the signals connected to the 'track bus' within 6 inches of the NCE box - and it still fails to update at times. I can't take the project any further until reliability of correct aspect be attained. I can supply more detailed info to anyone who thinks they can help. Regards, Nimble