Client crashes when joining my server

I’ve installed the dedicated server per the instructions at
I added the -multihome tag to the start.bat.

I added the .exe’s in windows firewall so it will allow traffic from and to the server.

now, when connecting to the server (LAN, another PC). The client crashes with an error message:
The UE4-ConaSandbox Game has crashed and will… (dont see anymore than that in the window list)
Fatal Error!

Anyone know what it might be? How to solve it?

When removing the server password i can connect to the server again.
But as soon as i add a server password the client crashes when connecting.

Anyone has any ideas?
Tried adding the server password string to either engine and serversettings, same result on both .ini

are the devs hanging around here? or are this a community forum only?

someone sure should know something here.
I cant be the only person running a dedicated server that has stumbled upon this bug?