Originally posted by creampuff No problem with the download on my Mac, now or in the past with all my Pentax cameras.
OP rather than being all alarmist with such a thread title, perhaps you should consider the software that you used to unzip the downloaded file, or your computer or SD card could be the cause of your issue. Your thread title gives the impression that the software download for Mac is problematic when it isn't so at all.
Yes, I agree - the thread title was alarmist, but we do get similarly ill-chosen words on this forum from time to time, and some deliberately provocative (though I doubt this was the case here). Some Windows users would probably have thought "Typical! You can't trust Macs" and moved on, ignorant of the reality and ready to spread the bad word - the same thing as when people on this forum are hyper-critical of Pentax products, and it gets noticed by others.
My upgrade on a Mac went smoothly, even though I didn't bother formatting the card beforehand (and I've never bothered on the *istD or K20D, either).