Possible bug ?

Not 100% sure if this is a bug or not.

Win 7 Pro X64 was just going to upload the std blink sketch to a UNO. Output from the lower console below.

Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated recipe.preproc.macros="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} {preproc.macros.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes} "{source_file}", automatically converted to recipe.preproc.macros="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} {preproc.macros.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes} "{source_file}" -o "{preprocessed_file_path}". Consider upgrading this core.
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/tmp/tmp/webide_tmp691234/Blink/sketch/Blink.ino.cpp" -o "/dev/null"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/tmp/tmp/webide_tmp691234/Blink/sketch/Blink.ino.cpp" -o "/dev/null"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/tmp/tmp/webide_tmp691234/Blink/sketch/Blink.ino.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/preproc/ctags_target_for_gcc_minus_e.cpp"
"/opt/arduino-builder/tools/ctags/5.8-arduino10/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "/tmp/tmp/webide_tmp691234/Blink/preproc/ctags_target_for_gcc_minus_e.cpp"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/tmp/tmp/webide_tmp691234/Blink/sketch/Blink.ino.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/sketch/Blink.ino.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -x assembler-with-cpp -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/wiring_pulse.S" -o "/tmp/tmp/webide_tmp691234/Blink/core/wiring_pulse.S.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/WInterrupts.c" -o "/tmp/tmp/webide_tmp691234/Blink/core/WInterrupts.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/hooks.c" -o "/tmp/tmp/webide_tmp691234/Blink/core/hooks.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/wiring.c" -o "/tmp/tmp/webide_tmp691234/Blink/core/wiring.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/wiring_analog.c" -o "/tmp/tmp/webide_tmp691234/Blink/core/wiring_analog.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/wiring_digital.c" -o "/tmp/tmp/webide_tmp691234/Blink/core/wiring_digital.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/wiring_pulse.c" -o "/tmp/tmp/webide_tmp691234/Blink/core/wiring_pulse.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/wiring_shift.c" -o "/tmp/tmp/webide_tmp691234/Blink/core/wiring_shift.c.o"
o/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/CDC.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/CDC.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/HardwareSerial.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/HardwareSerial0.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial0.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/HardwareSerial1.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial1.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/HardwareSerial2.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial2.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/HardwareSerial3.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial3.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/IPAddress.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/IPAddress.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/PluggableUSB.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/PluggableUSB.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/Print.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/Print.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/Stream.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/Stream.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/Tone.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/Tone.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/USBCore.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/USBCore.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/WMath.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/WMath.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/WString.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/WString.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/abi.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/abi.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/main.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/main.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10608 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/opt/cores/arduino/avr/cores/arduino" "-I/opt/cores/arduino/avr/variants/standard" "/opt/cores/arduino/avr/cores/arduino/new.cpp" -o "/tmp/tmp/webide_tmp691234/Blink/core/new.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/wiring_pulse.S.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/WInterrupts.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/hooks.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/wiring.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/wiring_analog.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/wiring_digital.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/wiring_pulse.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/wiring_shift.c.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/CDC.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial0.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial1.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial2.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/HardwareSerial3.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/IPAddress.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/PluggableUSB.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/Print.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/Stream.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/Tone.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/USBCore.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/WMath.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/WString.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/abi.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/main.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-ar" rcs "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "/tmp/tmp/webide_tmp691234/Blink/core/new.cpp.o"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-gcc" -w -Os -Wl,--gc-sections -mmcu=atmega328p -o "/tmp/tmp/webide_tmp691234/Blink/Blink.ino.elf" "/tmp/tmp/webide_tmp691234/Blink/sketch/Blink.ino.cpp.o" "/tmp/tmp/webide_tmp691234/Blink/core/core.a" "-L/tmp/tmp/webide_tmp691234/Blink" -lm
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 "/tmp/tmp/webide_tmp691234/Blink/Blink.ino.elf" "/tmp/tmp/webide_tmp691234/Blink/Blink.ino.eep"
"/opt/tools/avr-gcc/4.8.1-arduino5/bin/avr-objcopy" -O ihex -R .eeprom "/tmp/tmp/webide_tmp691234/Blink/Blink.ino.elf" "/tmp/tmp/webide_tmp691234/Blink/Blink.ino.hex"
Could not program the board

Sorry about three seperate posts but complete output exceeds max allowed.

Also get a pop up box that says "The program can't start because libusb0.dll is missing from your computer. Try reinstalling the program to fix this problem."

Have not changed anything on the computer. No new programs and no program removals.

Cant do much right now as I have a board under test with the regular IDE (1.6.9) that I need to keep running as long as possible to test the new WiFi101 libs from Sandeepmistry.

Hey @Ballscrewbob has this happened again to you? I am not actually able to reproduce, everything seems fine. Please take also into consideration that some weird behavior might happen for a couple of minutes when we are pushing a new release online... Thank a LOT for all your precious feedback!

Hi not seen it since so going to guess it was as you say.