: 4.19 may fail to automatically "see" an installed WinAVR compiler because it looks for the newer "Atmel Toolchain" registry keys. Manual path configuration in the IDE settings is often required. Performance & Comparison
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: Added support for various ATtiny, ATmega, and ATXMEGA parts that were not in previous versions. avr+studio+419+hot
: By default, version 4.19 may not automatically link to the WinAVR toolchain. Users must manually uncheck "Use AVR ToolChain" in Project Configuration Options and browse to the specific avr-gcc.exe and make.exe files. avr+studio+419+hot