Dane, It wouldn't be a bad idea to call Tim Ring, but if you want to try a few things first, this is what I would do:
The latest LM-3s file is 2.30. Double-check that on the Info screen in both engines before doing anything else. If that is OK it sounds like the Heavy Steam ULT file may be corrupt. Delete the ULT file from one of the engines and see if the other sound files are working. If not, something may have been damaged in the modules during the file transfer. If the sounds are working, delete the ULT file in the other engine and in RPA. Download it again from the Ring server and copy it over onto the HC and one of the modules. If that works copy it into the other module and you should be good. If this doesn't work there is a small possibility that the LM-3s update 2.30 is bad. You will have to contact Ring for more advice. Good luck.