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After opening cnc_ctrl_v1.ino I get an upload error

#1

After opening this file I get this message when I hit the upload arrow: Arduino: 1.8.8 (Windows 10), Board: “Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)”

c:\users\john\downloads\arduino-1.8.8-windows\arduino-1.8.8\hardware\tools\avr\bin…/lib/gcc/avr/5.4.0/…/…/…/…/avr/bin/ar.exe: unable to rename ‘core\core.a’; reason: File exists

exit status 1
Error compiling for board Arduino/Genuino Mega or Mega 2560.

This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.

What is causing this error?

#2

Is the file unzipped?

Thank you

#3

I believe so. Let me see if I can verify that.

#4

If it is unzipped try moving it to of c:\users\john\

shorten the path.

Your user path is looking long Windows could be tripping over it’s self on path size limit.

Thank you