Thanks.
Tony
=========================================================================================
Arduino: 1.8.5 (Linux), Board: "Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"
java.io.IOException: The sketch already contains a file named "Marlin.ino"
at processing.app.Sketch.checkNewFilename(Sketch.java:273)
at processing.app.SketchFile.renameTo(SketchFile.java:179)
at processing.app.SketchController.save(SketchController.java:339)
at processing.app.Editor.handleSave2(Editor.java:2020)
at processing.app.Editor.handleSave(Editor.java:2000)
at processing.app.Editor.handleRun(Editor.java:1718)
at processing.app.Editor.handleRun(Editor.java:1713)
at processing.app.EditorToolbar.mousePressed(EditorToolbar.java:345)
at java.awt.Component.processMouseEvent(Component.java:6536)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6304)
at java.awt.Container.processEvent(Container.java:2239)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2297)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4532)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)
at java.awt.Container.dispatchEventImpl(Container.java:2283)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
at java.awt.EventQueue$4.run(EventQueue.java:733)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
The sketch already contains a file named "Marlin.ino"
/usr/share/arduino/arduino-builder -dump-prefs -logger=machine -hardware /usr/share/arduino/hardware -hardware /home/tony/.arduino15/packages -tools /usr/share/arduino/tools-builder -tools /home/tony/.arduino15/packages -libraries /home/tony/code/Arduino/libraries -fqbn=archlinux-arduino:avr
/usr/share/arduino/arduino-builder -compile -logger=machine -hardware /usr/share/arduino/hardware -hardware /home/tony/.arduino15/packages -tools /usr/share/arduino/tools-builder -tools /home/tony/.arduino15/packages -libraries /home/tony/code/Arduino/libraries -fqbn=archlinux-arduino:avr
Using board 'mega' from platform in folder: /usr/share/arduino/hardware/archlinux-arduino/avr
Using core 'arduino' from platform in folder: /usr/share/arduino/hardware/archlinux-arduino/avr
Build options changed, rebuilding all
Detecting libraries used...
"/usr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -fno-devirtualize -fno-use-cxa-atexit -w -x c++ -E -CC -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10805 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR "-I/usr/share/arduino/hardware/archlinux-arduino/avr/cores/arduino" "-I/usr/share/arduino/hardware/archlinux-arduino/avr/variants/mega" "/tmp/arduino_build_297291/sketch/Marlin.ino.cpp" -o "/dev/null"
"/usr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -fno-devirtualize -fno-use-cxa-atexit -w -x c++ -E -CC -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10805 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR "-I/usr/share/arduino/hardware/archlinux-arduino/avr/cores/arduino" "-I/usr/share/arduino/hardware/archlinux-arduino/avr/variants/mega" "-I/home/tony/code/Arduino/libraries/U8glib/src" "/tmp/arduino_build_297291/sketch/Marlin.ino.cpp" -o "/dev/null"
"/usr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -fno-devirtualize -fno-use-cxa-atexit -w -x c++ -E -CC -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10805 -DARDUINO_AVR_MEGA2560 -DARDUINO_ARCH_AVR "-I/usr/share/arduino/hardware/archlinux-arduino/avr/cores/arduino" "-I/usr/share/arduino/hardware/archlinux-arduino/avr/variants/mega" "-I/home/tony/code/Arduino/libraries/U8glib/src" "/tmp/arduino_build_297291/sketch/Marlin.ino.cpp" -o "/tmp/arduino_build_297291/preproc/ctags_target_for_gcc_minus_e.cpp"
/tmp/arduino_modified_sketch_428498/Marlin.ino:48:14: fatal error: LiquidCrystal.h: No such file or directory
#include <LiquidCrystal.h> // library for character LCD
^~~~~~~~~~~~~~~~~
compilation terminated.
Using library U8glib at version 1.19.1 in folder: /home/tony/code/Arduino/libraries/U8glib
exit status 1
Error compiling for board Arduino/Genuino Mega or Mega 2560.