To check for Mac software updates, open the App Store app on your Mac.
Click Updates in the App Store toolbar, then use the Update buttons to download and install any updates listed.
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Updating program capable of accomodating nsr
Step 2 is optional, and will replace your Country/Prefix databases with the latest release. With every major release of Logger32 there are always a few unhappy users.
Step 3 is optional, and will replace your IOTA databases with the latest release. The fall into two categories: a) There are the really clever ones who have their own way of doing things and don't need to follow instructions, and b) those who do not know how to unzip the content of a zip file into a directory - The instructions are clear, unzip the content of the zip file (not copy the zip file) into the Logger32 directory.
I know you're smarter than the average bear, but just do as you're told.
Before you start: 1) make a note of the name and full path of your Logbook. 2) MAKE ABSOLUTELY SURE YOU HAVE KNOWN GOOD UP_TO_DATE ADIF BACKUPS OF ALL YOUR LOGBOOKS.
Any error in conversion, read the recovery instructions at the bottom of the page.