Icom control software uses PcrSch.dll to search for connected receiver on USB ports by looking for specific PID/VID.
This will not work when running under Wine or other windows emulator. It's also handy when you want to control remote receiver using TCP/IP <-> COM port bridge.
Solution? Download pcrsch.zip (20kb), backup old one in application directory and replace it with dll from archive.
My pcrsch.dll uses simple text file ports.cfg to define receiver list that is passed to application.