In AVRStudio 4.19, Atmel made some serious changes from previous versions. Specially while using the toolchains. After you install WinAVR ...
AVR Studio 419 With AVR Toolchain 419iso
I installed Studio 4.19 and it did not find my WinAVR installation. I did see how to fix this problem in a recent thread.. In AVRStudio 4.19, Atmel made some serious changes from previous versions. Specially while using the toolchains. After you install WinAVR ... 807e585570
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