It's working for me (in TANE, looking at your moniker). That's built-in payware so all that can be done (which should be sufficient to fix the problem) is to look for missing/faulty dependencies (and it has MANY dependencies) or revert. For sounds they use <kuid2:200202:53645:2> "EMD 20-645E3 Engine Sounds" and <kuid2:45324:53004:3> "EMD 16-645 diesel engine sounds", respectively.