MM19 on Win10 is constantly crashing. I have been using MM for a couple of months (first as trial) with no problem. But for the past couple of days, as I am prunning my mindmaps, doing basic selection and formatting, MM just crashes over and over again.
As Ary suggests I would contact Mindjet support but in the interim you could try uninstalling and reinstalling it. On the few occasions when I’ve experienced MindManager crashes this has usually resolved the issue.