I have a weird problem:
AVR Studio 6.1 doesn't seem to install in my 64-bit Win 7 machine. It complains that some installation is unfinished, but there is none. Even Ccleaner didn't help.
Could it be already installed VisualStudio 2012?
Another weird thing: WinAVR doesn't seem to work. Tried it on that same 64-bit Win7 machine and in a 32-bit Vista machine. I've used that same WinAVR some years back in my old Win2000 machine. It worked fine.
Only AVR Studio 6.1 seems to work on 32-bit Vista machine.
Loosing the WinAVR is bad, because I could make a start - edit - make - run cycle and have a cup of coffee in shorter time AVR studio gets to the "preparing the solution"-phase (about as long as it takes Vista to boot).
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Debugging is for sissies and delivery for surgeons. Real men do demonstration.