https://bugs.winehq.org/show_bug.cgi?id=52131
--- Comment #12 from Eric eric.wheez@gmail.com --- I found a dvoa.dll in the main `RMS\ Express` directory. When I rename it to "xdvoa.dll" and run RMS Express, I can press the SFI button and not have the program crash (though RMS Express does warn "C:\RMS Express\dvoa.dll not found. No propagation data will be available." and the "Path Reliability Estimate" and "Path Quality Estimate" cells in the HF Channel Selector window turn all to 0's).
PEiD shows dvoa.dll to be a "Borland Delphi DLL".
I've so far been unsuccessful trying to trace dvoa.dll in wine-mono. Opening it in notepad++ and looking for text strings, I found "TVoacapEngine", which I believe is a reference to the "Voice of America Coverage Analysis Program", a free professional high-frequency (HF) propagation prediction software https://www.voacap.com/
So, I currently think that RMS Express might be sending data to this library to have it calculate propagation prediction information, then send that info back to RMS Express. Maybe something is getting messed up with how data is sent or received to/from that library?