I just tried again. I first did a clean uninstall then reinstalled, turned off automatic import, went into tools > options and turned off all the automatic import checkboxes under Library and Folders. Rebooted and tried again.
Selected Help > Logging > Enable Logging. Exited from Help menu, went back in to Help, and select Logging > Report a Problem. Again it crashed and generated an Apple Error report and a Media Center log.
Both are attached. Anybody from JRiver have any ideas? It's a brand new MacBook Pro 2016 with Intel HD 530 and AMD Radeo Pro 460. MacOS Sierra 10.12.1.
I've been faithfully buying these licenses on Windows since v.18. I really want to use it on my new Mac.
I just had a thought ... Might it be FileVault ... It's turned on by default during Mac set-up.