Error compiling for board Arduino Nano.

I am trying to upload the same code to Arduino Nanos plugged into different PCs in the same classroom. Some of the Arduinos work no problem, but most are returning an error once the code is verified or uploaded. All the users have full read/write to the folders listed. Just cannot work out why some PCs work and others do not.

The errors are as follows:

Arduino: 1.8.1 (Windows 7), Board: "Arduino Nano, ATmega328"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries \qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -ide-version=10801 -build-path C:\Users\4potters\AppData\Local\Temp\arduino_build_438309 -warnings=none -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose \qegspenrith.local\userfolders\Students\Admitted 2014\4potters\Documents\School work\DT\code\code.ino C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries \qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328 -ide-version=10801 -build-path C:\Users\4potters\AppData\Local\Temp\arduino_build_438309 -warnings=none -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose \qegspenrith.local\userfolders\Students\Admitted 2014\4potters\Documents\School work\DT\code\code.ino Using board 'nano' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr Using core 'arduino' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr Detecting libraries used... "C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10801 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs" "C:\Users\4potters\AppData\Local\Temp\arduino_build_438309\sketch\code.ino.cpp" -o "nul" "C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10801 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs" "-I\qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries\Adafruit_NeoPixel" "C:\Users\4potters\AppData\Local\Temp\arduino_build_438309\sketch\code.ino.cpp" -o "nul" "C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10801 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs" "-I\qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries\Adafruit_NeoPixel" "\qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries\Adafruit_NeoPixel\Adafruit_NeoPixel.cpp" -o "nul" "C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10801 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs" "-I\qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries\Adafruit_NeoPixel" "\qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries\Adafruit_NeoPixel\esp8266.c" -o "nul" Generating function prototypes... "C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10801 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\eightanaloginputs" "-I\qegspenrith.local\userfolders\students\admitted 2014\4potters\Documents\Arduino\libraries\Adafruit_NeoPixel" "C:\Users\4potters\AppData\Local\Temp\arduino_build_438309\sketch\code.ino.cpp" -o "C:\Users\4potters\AppData\Local\Temp\arduino_build_438309\preproc\ctags_target_for_gcc_minus_e.cpp" C:\Program Files (x86)\Arduino\arduino-builder returned 1,073,741,855 Error compiling for board Arduino Nano.