Maybe it’s just the USB drive I used. I will go ahead and install WinAVR normally. Studio 4 wasn’t bad, as I recall. I did have some problems with one of the programmers, but I now have an STK500 which I know works with the chips. The portable version could have been useful, 'tho.
Thanks,
Alan KM6VV
Ah! The normal version works! The “Portable” version wouldn’t even bring up the manual (tried to open up a DOS window).