Error de compilación

Mi nombre es Carlos, soy nuevo usando Arduino, lo acabo de instalar en una MacPro(64bits).
Sistema operativo macOS Catalina
Al compilar me da el siguiente mensaje de error.
Agradeceria la ayuda del Foro.

Arduino:1.8.9 (Mac OS X), Tarjeta:"Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"

/Applications/Arduino.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/carloseduardocolombo/Trabajo/Arduino/libraries -fqbn=arduino:avr:mega:cpu=atmega2560 -vid-pid=067B_2303 -ide-version=10809 -build-path /var/folders/xt/ms7swfl903vf2n51d1vh_g6h0000gn/T/arduino_build_700663 -warnings=default -build-cache /var/folders/xt/ms7swfl903vf2n51d1vh_g6h0000gn/T/arduino_cache_950723 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avrdude.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -verbose /Applications/Arduino.app/Contents/Java/examples/01.Basics/Blink/Blink.ino
/Applications/Arduino.app/Contents/Java/arduino-builder -compile -logger=machine -hardware /Applications/Arduino.app/Contents/Java/hardware -tools /Applications/Arduino.app/Contents/Java/tools-builder -tools /Applications/Arduino.app/Contents/Java/hardware/tools/avr -built-in-libraries /Applications/Arduino.app/Contents/Java/libraries -libraries /Users/carloseduardocolombo/Trabajo/Arduino/libraries -fqbn=arduino:avr:mega:cpu=atmega2560 -vid-pid=067B_2303 -ide-version=10809 -build-path /var/folders/xt/ms7swfl903vf2n51d1vh_g6h0000gn/T/arduino_build_700663 -warnings=default -build-cache /var/folders/xt/ms7swfl903vf2n51d1vh_g6h0000gn/T/arduino_cache_950723 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avrdude.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=/Applications/Arduino.app/Contents/Java/hardware/tools/avr -verbose /Applications/Arduino.app/Contents/Java/examples/01.Basics/Blink/Blink.ino
Using board 'mega' from platform in folder: /Applications/Arduino.app/Contents/Java/hardware/arduino/avr
Using core 'arduino' from platform in folder: /Applications/Arduino.app/Contents/Java/hardware/arduino/avr
Detecting libraries used...
/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avr-g++ -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10809 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/mega /var/folders/xt/ms7swfl903vf2n51d1vh_g6h0000gn/T/arduino_build_700663/sketch/Blink.ino.cpp -o /dev/null
fork/exec /Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avr-g++: bad CPU type in executable
Error compilando para la tarjeta Arduino/Genuino Mega or Mega 2560.

Bienvenido al foro Arduino.
Lamento decir esto pero sinceramente no se si las normas del foro tienen algun virus NIVEL 4 o qué le pasa a todo recién llegado (salvo excepciones puntuales) que nadie las lee.
Por favor lee las normas del foro, no estaré corrigiendo cada post tuyo donde cometas faltas como recién.