UPDATE - RESOLVED
I was finally able to get support a USB backup where they found a rig that was damaged beyond repair. Once I deleted that rig and selected another, so it wasn't in the buffer, RM is finally able to sync again.
Whew - it's been a year or so!
OP here:
I've been dealing with this for over a year and over multiple updates of Rig Manager including 3.2.65.
Mac OS 10.14.6
Rig Manager 3.2.65
Rig Manager crashes when it reaches the "Syncing Rigs" 100% of the time.
I have sent support no less than 50 crash logs over the course of the last year with no response.
I'm ready to move on to a different product. I've been patient and also offered the crash logs so many times. I'm beyond frustrated.