I am using Linux Mint and downloaded all necessary files for redbear Duo but cannot compile anything with a strange error.
fork/exec /home/(username)/.arduino15/packages/RedBear/tools/arm-none-eabi-gcc-redbear/4.9-2015-q3/bin/arm-none-eabi-g++: no such file or directory
Error compiling for board RedBear Duo (Native USB Port).
the file, arm-none-eabi-g++, is exist in the right folder but cannot understand why my Arduino cannot read/access it. Have any hint to figure it out??