Walther's ARR F7 #1502 will not import into JMRI. Suggestions?

[bigfoot13]

I'm trying to import my Walther's F7 #1502 into JMRI and it's complaining that no such decoder is defined.
"Found mfg 141 (Throttle-Up (SoundTraxx)) version 255; no such decoder defined"
Suggestions on how to successfully import this as I'm new to JMRI.

EMD F7A w/48" Dynamic Fan - Tsunami(R) Sound & DCC -- Alaska Railroad #1502 (1982+ Scheme, blue, yellow)

Find everything you need to model Alaska Railroad passenger operations here. * Limited Edition - One-Time Run of these Unit Numbers Based on Units in Service 1982-Retirement with: * Snowplow Pilot * 48" Dynamic Brakes * Rotary Beacon * Single Headlight on A Units * Fire Cracker Radio...

www.walthers.com

My Walther's GN F7 ESU decoder imports just fine.

 

[bigfoot13]

Ok. Time to confess. Another section of track was wired into the programming track and I forgot about that and there just happened to be a engine on it. Still not sure the exact decoder to manually select but at least it doesn't time out this time.