Hello, this is my first post to the forum though not necessarily new to Reprap or Arduino themselves, and while I may have the mechanical and engineering backgrounds I've only ever dabbled in coding before.
My printer WAS fully functional until I finally decided to update Adruino IDE and go to Marlin 2.04, I'm assuming I did something stupid out of ignorance for the newer Marlin and/or IDE version. The frame is fine, the calibration WAS fine, and everything was running smoothly until this upgrade. Any insight would be greatly appreciated. Here is my error message:
Arduino: 1.8.12 (Windows 10), Board: "Arduino Mega or Mega 2560, ATmega2560 (Mega 2560)"
C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\sunew\OneDrive\Documents\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 C:\Users\sunew\OneDrive\Documents\Arduino\libraries -fqbn=arduino:avr:mega:cpu=atmega2560 -ide-version=10812 -build-path C:\Users\sunew\AppData\Local\Temp\arduino_build_970389 -warnings=none -build-cache C:\Users\sunew\AppData\Local\Temp\arduino_cache_14650 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino5.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\sunew\OneDrive\Desktop\Printer Firmware Instalation\MetaIs_Marlin_2.04\MetaIs_Marlin_2.04.ino
C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\sunew\OneDrive\Documents\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 C:\Users\sunew\OneDrive\Documents\Arduino\libraries -fqbn=arduino:avr:mega:cpu=atmega2560 -ide-version=10812 -build-path C:\Users\sunew\AppData\Local\Temp\arduino_build_970389 -warnings=none -build-cache C:\Users\sunew\AppData\Local\Temp\arduino_cache_14650 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino5.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\sunew\OneDrive\Desktop\Printer Firmware Instalation\MetaIs_Marlin_2.04\MetaIs_Marlin_2.04.ino
Using board 'mega' 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 -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10812 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\mega" "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389\\sketch\\MetaIs_Marlin_2.04.ino.cpp" -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 -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10812 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\mega" "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389\\sketch\\MetaIs_Marlin_2.04.ino.cpp" -o "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389\\preproc\\ctags_target_for_gcc_minus_e.cpp"
"C:\\Program Files (x86)\\Arduino\\tools-builder\\ctags\\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389\\preproc\\ctags_target_for_gcc_minus_e.cpp"
Compiling sketch...
"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 -Wno-error=narrowing -MMD -flto -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10812 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\mega" "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389\\sketch\\MetaIs_Marlin_2.04.ino.cpp" -o "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389\\sketch\\MetaIs_Marlin_2.04.ino.cpp.o"
Compiling libraries...
Compiling core...
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\wiring_pulse.S.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\hooks.c.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\wiring_pulse.c.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\WInterrupts.c.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\wiring_shift.c.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\wiring_analog.c.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\wiring_digital.c.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\wiring.c.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\PluggableUSB.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\CDC.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\HardwareSerial.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\HardwareSerial2.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\HardwareSerial1.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\HardwareSerial0.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\WString.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\IPAddress.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\WMath.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\abi.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\new.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\HardwareSerial3.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\Tone.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\Print.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\main.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\Stream.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\USBCore.cpp.o
Using previously compiled file: C:\Users\sunew\AppData\Local\Temp\arduino_build_970389\core\core.a
Archiving built core (caching) in: C:\Users\sunew\AppData\Local\Temp\arduino_cache_14650\core\core_arduino_avr_mega_cpu_atmega2560_0c812875ac70eb4a9b385d8fb077f54c.a
Linking everything together...
"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-gcc" -w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections,--relax -mmcu=atmega2560 -o "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389/MetaIs_Marlin_2.04.ino.elf" "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389\\sketch\\MetaIs_Marlin_2.04.ino.cpp.o" "C:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389/core\\core.a" "-LC:\\Users\\sunew\\AppData\\Local\\Temp\\arduino_build_970389" -lm
C:\Users\sunew\AppData\Local\Temp\ccO2ZjNV.ltrans0.ltrans.o: In function `main':
C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/main.cpp:43: undefined reference to `setup'
C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/main.cpp:46: undefined reference to `loop'
collect2.exe: error: ld returned 1 exit status
exit status 1
Error compiling for board Arduino Mega or Mega 2560.