[connection error (7.3)]

I am getting this same issue and tried everything as far as opening ports, turning off firewall, altering config wtf file in client to SET portal "127.0.0.1" and all other local ips and external ips and matched them at the same time to the server configs but still the same error code. Its driving me mad so any help please.

[Dbc, Maps, mmaps, Vmaps problems]

when you compile the core make sure you select the tools tick box when using cmake then the extractors will compile.