2018-11-14 14:52:55.402 [RPC1] WARN daemon.rpc src/rpc/core_rpc_server.cpp:802 [on_send_raw_tx]: tx verification failed: invalid ring size, invalid input
Unfortunately the GUI that you use doesn't work anymore. The light wallet is latest (
http://light.wownero.com) but it does not support payment ID's.
Your only option is to use the CLI wallet to send your transaction. You don't have to compile wownero yourself, you can download the binary instead:
https://github.com/wownero/wownero/releasesEdit: or maybe not...