As I mentioned in the email, I just sent the nxdb file (which I found at /usr/NX/etc/nxdb — I hope it’s correct), as well as an updated dump of server logs. As I’d mentioned in the email, I had re-installed the NoMachine client on windows, wondering if that was the problem, and now, I don’t even get a flash of the connections page. It goes straight from the NoMachine login page (where I enter my password) and straight to the message “The connection with the server was lost”.
Thanks again for your help in trying to figure this out!