This is the error I get when trying to compile Marlin 2.0.3.
fork/exec C:\Users\timot\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\5.4.0-atmel3.6.1-arduino2/bin/avr-gcc.exe: The filename or extension is too long.
Error compiling for board Sanguino.
I thought I posted this but might have been in the wrong area, I am sorry if I have two posts for the same issue.
I do not see what filename or extension is too long.
I've never heard of the 1.1.8 version of the Arduino IDE. The official IDE version jumped from 1.0.6 to 1.5.0, so there never was an official 1.1.8. Please download and install Arduino IDE 1.8.12 from the downloads page:
Now it failed again. I tried to upload to the board from PlatformIO and it died.
People sid to move the files right to C:/ but it still seems to call it up from the previous location. It still goes through Appdata for some reason.
I am out of ideas and brain cells, been doing this all day and got now where.