I'm getting the above Failed to load driver dialog when starting up REW 5.20.4 with ASIO4ALL 2.15 Beta 2, which has worked fine with REW versions up until now. Maybe some Windows 10 update broke things? I can dismiss the dialog and then go into Preferences and successfully select ASIO4ALL v2 just fine. Log file shows:
Dec 04, 2021 7:11:17 PM roomeqwizard.RoomEQ_Wizard main
INFO: REW V5.20.4 running Azul Systems, Inc. JRE 1.8.0_302 64-bit on Windows 10
Locale: language en, keyboard US, windows-1252 at 96 DPI
Dec 04, 2021 7:11:20 PM roomeqwizard.RoomEQ_Wizard$5 run
INFO: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
Dec 04, 2021 7:11:22 PM com.synthbot.jasiohost.AsioDriver <clinit>
INFO: Loaded jasiohost64.dll
Dec 04, 2021 7:11:24 PM roomeqwizard.E B
INFO: java.lang.NullPointerException
Dec 04, 2021 7:11:17 PM roomeqwizard.RoomEQ_Wizard main
INFO: REW V5.20.4 running Azul Systems, Inc. JRE 1.8.0_302 64-bit on Windows 10
Locale: language en, keyboard US, windows-1252 at 96 DPI
Dec 04, 2021 7:11:20 PM roomeqwizard.RoomEQ_Wizard$5 run
INFO: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
Dec 04, 2021 7:11:22 PM com.synthbot.jasiohost.AsioDriver <clinit>
INFO: Loaded jasiohost64.dll
Dec 04, 2021 7:11:24 PM roomeqwizard.E B
INFO: java.lang.NullPointerException