Android Question Problems with compile and javac

[JMB]

Hi there,

I've upgraded to 12.20 and followed all the latest installation instructions. When I try and compile an old project, I get this warning....

Java Version: 14
Building folders structure. (0.27s)
Compiling code. (0.48s)
Compiling layouts code. (0.06s)
Organizing libraries. (0.31s)
(AndroidX SDK)
Compiling resources (1.33s)
Linking resources (1.21s)
Compiling debugger engine code. (9.02s)
Compiling generated Java code. Error
error: invalid flag: gen\b4a\******\R
Usage: javac <options> <source files>
use --help for a list of possible options

javac 14.0.1


Can anyone suggest a solution for this?

Thank you.

Jonathan

 

[DonManfred]

Did you install a new SDK too? With B4A 12+ you need a new SDK.

Guess your SDK-Installation is old already?

 

[JMB]

Hmm. I thought I installed everything from new.

I will check.