With newer versions (19327, 19342 and 19519), on the server I'm getting:
kernel Info kernel "openvpnserver[1222]: segfault at 8917000 ip 080f6dba sp bf8849ac error 4 in openvpn[8048000+114000]"
and on the client:
Connection reset by peer (WSAECONNRESET) (code=10054)
It is important to say that in all three cases I've used the same settings. Actually I've always used restore option to restore settings from file "nvrambak.bin" which I had made from the newest version (19519). (I've started from the latest version.) I've tried many times with each version, and result is always the same.
So, for people with openvpn server issues: I'm suggesting you to use version 18777.
For BrainSlayer and team: if you want I can send you detailed logs.