B4R Question Compile problem (solved)

[derez]

Suddenly I get this when I try to run Arduino or ESP:

B4R version: 1.20
Parsing code. (0.00s)
Compiling code. (0.08s)
Building project (0.07s)
Compiling & deploying Ino project (WeMos D1 R2 & mini - COM8) Error
Loading configuration...
java.lang.NullPointerException
at processing.app.BaseNoGui.selectSerialPort(BaseNoGui.java:1088)
at processing.app.helpers.CommandlineParser.parseArgumentsPhase1(CommandlineParser.java:143)
at processing.app.Base.<init>(Base.java:273)
at processing.app.Base.guardedMain(Base.java:219)
at processing.app.Base.main(Base.java:132)

What should I re-install ?

Uninstalled Arduino IDE 11 and installed 12, re-installed B4R, the same...
Arduino sketches seem to run OK .

Saw this link https://www.b4x.com/android/forum/threads/problems-for-com-port.71815/#post-456510, I'm installing version 11...

That did it ! .