Hi, I am new here and have just installed Embedded Studio on my Mac. It is updated and running the latest version of Mac OS. Following the Embedded Studio Guide on page 29. I first installed the package for my desired target MCU, Atmel SAMD21. I then created a new project selecting desired target SAMD21G18AU. I then choose Build | Build 'Project" and after a few moments, I get an error in the output window as follows; Compiling 'SEGGER_RTT.c' Compiling 'system_samd21.c' error unknown type name '…