Windows: Starting Classic edition from RIDE generates msgbox complaining that aplkeys/default.DIN is not present

[dyaandys]

Start classic locally from RIDE: get msgbox:
Stream 0: Can't acess "C:\Program Files\Dyalog\Dyalog APL-64 17.1 Classic\aplkeys\default.DIN"

All continues as normal after you click on OK within the timeout period. Otherwise you

1. get a msgbox with "Timed out"
2. Get a msg box with "Interpreter received SIGTERM"

IDE:
Version: 4.2.3432
Platform: Win32
Date: 2019-05-24 12:10:06 +0100
Git commit: 3be9ea7
Preferences:{
"selectedExe":"C:\Program Files\Dyalog\Dyalog APL-64 16.0 Classic\dyalog.exe"
}

Interpreter:
Version: 17.1.36365
Platform: Windows-64
Edition: Classic/64
Date: Jun 2 2019 at 19:44:41

[jayfoad]

In 81d6ae2 I fixed starting a Classic interpreter on non-Windows -- but probably broke it on Windows :-(