Cannot compile or upload to RAMBO Board, keep getting the following error.
Warning: Board Arduino_1.x.x:rambo:mega2560 doesn't define a 'build.board' preference. Auto-set to: RAMBO_MEGA2560
recipe.preproc.macros pattern is missing
Running Windows 10, Marlin firmware, IDE 1.69, COM6, Drivers installed and working, baud rate 115200.
Keep getting this error with Marlin and Repetier. have copied 1.xxx into Hardware folder as instructed. As I don't do code can someone just explain what has to happen to get this this uploading? 