I was having a similar problem, kept getting error message (308)
I changed to an 18vdc wall wort from Radio Shack to power my PR3 and that seems to have done the trick for me.
Tsunami decoders are notorious for not reading back without a program track booster. There are generally two options, the Soundtraxx PTB-100 and Tony's Trains PowerPax. The PTB-100 is the one that seems to work with the most array of decoders. Can you read it from the cab? If not, it's the power issue. If you cna read the same loco fine using the cab, then something may not be quite right with the JMRI configuration.
I've also seen floating around the internet a how to that shows you how to modify the PowerPro command station to put more power on the program track so that it can read more of these stubborn decoders without additional pieces of equipment.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
just installed Decoder Pro on my MacBook Pro. It connects to my NCE command station just fine. What I’m having trouble with is having the program detect any of the decoders on my locomotives. The decoders were installed by the manufacturer, so for example, there’s a version of the Soundtraxx Tsunami in my Athearn GP-40-2. When instructing Decoder Pro to Read from All Types, it comes back with “Found mfg 1 version -1; no such manufacturer defined”What’s my next step so that it can read the decoder? There’s plenty of choices under Soundtraxx in the decoder library, but how do I know which one would actually work?