I bought the protocolIt's not a bug!
As @Herbalist says.
You need protocol_key.txt (You can buy it from @yamano), and you need to edit the config file, and change "experimental_31: 0 to experimental_31: 1"
But. it works ONLY, so long you have a protocol_key.txt
Hi.
you can connect with the new versions you just need a protocol_key and this option on config "experimental_31: 1"
about that error i also got that vbut was fixed on 1.3.21 beta 7.
what version are you using ?