[#520] ungraceful fail upon send when using only vanilla Bitcoin Core as backend
[#520] ungraceful fail upon send when using only vanilla Bitcoin Core as backend

tokenly/counterparty-lib,monaparty/counterparty-lib,stefcrypto/counterparty-lib,CounterpartyXCP/counterparty-lib,F483/counterparty-lib,CounterpartyXCP/counterparty-lib,jarymoth/counterpartyd,coinwarp/dogeparty-lib,gotcha/testcounter,monaparty/counterparty-lib,F483/counterparty-lib