Desktop IDE and Web IDE don't work.

Computer: OSX El Capitan 10.11.6
Browser: Google Chrome 62.0.3202.89
Arduino: Uno
I’m using USB 1.1 (the “round” one in the Arduino and the flat one in the computer)

I tried to get my Arduino working, I installed the Arduino Create Agent first and after the Arduino IDE (1.8.8).
When I boot up the Arduino IDE, it chrashes after the loading display.
The Arduino Uno is playing 2 red lights, “ON” and “RX” (“RX” with an stop once a ±4 seconds)

On the Arduino Web IDE it’s an other problem.
At the select board button it gives the right Arduino, but the line in front of the name has an red cross trough it. Although when I select it, I get an popup that it’s connected.
When I click on the “monitor” It says “serial port unavailable”
When I try to upload an script (“Blink”), I get this popup: (see also the image)

./opt/arduino-builder/arduino-builder -compile -core-api-version 10611 -hardware opt/arduino-builder/hardware -hardware ./opt/cores -tools opt/arduino-builder/tools -tools ./opt/tools -built-in-libraries opt/libraries/latest -logger humantags -fqbn arduino:avr:uno -build-cache /tmp -build-path /tmp/545711373/build -verbose -prefs runtime.tools.avr-gcc.path=./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2 -prefs runtime.tools.avrdude.path=./opt/tools/avrdude/6.3.0-arduino14 -prefs runtime.tools.arduinoOTA.path=./opt/tools/arduinoOTA/1.2.1 -libraries /tmp/545711373/custom -libraries /tmp/545711373/pinned /tmp/545711373/Blink

Using board 'uno' from platform in folder: /home/ubuntu/opt/cores/arduino/avr

Using core 'arduino' from platform in folder: /home/ubuntu/opt/cores/arduino/avr

Detecting libraries used...

./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/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=atmega328p -DF_CPU=16000000L -DARDUINO=10611 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I/home/ubuntu/opt/cores/arduino/avr/cores/arduino -I/home/ubuntu/opt/cores/arduino/avr/variants/standard /tmp/545711373/build/sketch/Blink.ino.cpp -o /dev/null

Generating function prototypes...

./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/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=atmega328p -DF_CPU=16000000L -DARDUINO=10611 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I/home/ubuntu/opt/cores/arduino/avr/cores/arduino -I/home/ubuntu/opt/cores/arduino/avr/variants/standard /tmp/545711373/build/sketch/Blink.ino.cpp -o /tmp/545711373/build/preproc/ctags_target_for_gcc_minus_e.cpp

/home/ubuntu/opt/arduino-builder/tools/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /tmp/545711373/build/preproc/ctags_target_for_gcc_minus_e.cpp

Compiling sketch...

./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/avr-g++ -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -MMD -flto -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10611 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -I/home/ubuntu/opt/cores/arduino/avr/cores/arduino -I/home/ubuntu/opt/cores/arduino/avr/variants/standard /tmp/545711373/build/sketch/Blink.ino.cpp -o /tmp/545711373/build/sketch/Blink.ino.cpp.o

Compiling libraries...

Compiling core...

Using precompiled core: /tmp/core/core_arduino_avr_uno_86d814ab5ac6e08f9be464f7f3c7beb3.a

Linking everything together...

./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/avr-gcc -w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o /tmp/545711373/build/Blink.ino.elf /tmp/545711373/build/sketch/Blink.ino.cpp.o /tmp/545711373/build/../../core/core_arduino_avr_uno_86d814ab5ac6e08f9be464f7f3c7beb3.a -L/tmp/545711373/build -lm

./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/avr-objcopy -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 /tmp/545711373/build/Blink.ino.elf /tmp/545711373/build/Blink.ino.eep

./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/avr-objcopy -O ihex -R .eeprom /tmp/545711373/build/Blink.ino.elf /tmp/545711373/build/Blink.ino.hex

./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/avr-size -A /tmp/545711373/build/Blink.ino.elf

Sketch uses 928 bytes (2%) of program storage space. Maximum is 32256 bytes.

Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.

How do I get this working?

Greetings,
Luc

The message looks like it was just a COMPILE message as there does not appear to be an error listed.
Did you use the RIGHT pointing arrow button to UPLOAD ?

Some people have also listed USB 1.0 as an issue with older OS's so a USB 2.0 is often preferred.
A member also recently listed using a USB 2.0 hub with windows XP as helping him get around a 1.0 issue and it can certainly help with USB 3.0 which can also cause some minor issues.

As far as the regular IDE it is often reported to be some form of permissions error with macs and I think you will find posts about that in the general troubleshooting section.