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Thanks. I tried it without success some time ago. I will try it again. Why isn’t this described in the quick quide and in the examples? It’s confusing.

I have found the problem. A library called grbl (for 3D printing) caused the problem. It includes Print.h which conflicts with the z-uno board package. Deleting the grbl library from the Arduino IDE solved it.

I have found the problem. A library called grbl (for 3D printing) caused the problem. It includes Print.h which conflicts with the z-uno board package. Deleting the grbl library from the Arduino IDE solved it.

"Choose general widget --> Device Options --> 1 Add Group --> Set to: Z-Wave 0; _Scene Controller 0"

The "general widget" is that the z-uno?

The is the other error:

Found 1.8.x project structure (File:zuno_SimpleDimmer.ino.cpp). Converting it...
Error while detecting libraries included by C:\Users\Gerald\AppData\Local\Temp\arduino_build_351325\sketch\zuno_SimpleDimmer.ino.cpp

Is there a solution? I cannot continue and my customers are waiting.

Regards,
Gerald.

It may not be Java related, but sdccp simply causes the problem.

This is the log file. DEBUG [2020-11-20 12:07:52,207] Starting on Windows. ARGS:C:\Users\Gerald\AppData\Local\Arduino15\packages\Z-Uno\tools\zuno_toolchain\00.08.82/zuno_toolchain/compiler arduino_preproc C:\Users\Gerald\AppData\Local\Temp\arduino_build_722242\sketch\zuno_SimpleDimmer.ino.cpp -r C:\...

See also "Latest Java update causes prerpocessing error" topic here in forum.

This is Custom_sdcpp_.cpp which does not include the header files. I have made the code shorted with "..." and I have deleted some empty lines. ----------------------------------- # 1 "C:\\Users\\Gerald\\AppData\\Local\\Temp\\arduino_build_722242\\Custom.c" # 1 "<built-in>&q...