afraid that wont work. Since terracoin launch. Some mining pool has been creating blocks with an invalid block version. That is why i had to set the islegacy version to the highest value they made. Apparently this is now conflicting with merged mining.

EDIT: unless its working for you?

[ec2-user@ip-172-31-59-190 ~]$ terracoin-cli getinfo
{
  "version": 91201,
  "protocolversion": 70002,
  "walletversion": 60000,
  "balance": 0.00000000,
  "blocks": 832999,
  "timeoffset": 0,
  "connections": 7,
  "proxy": "",
  "difficulty": 1527279.818642486,
  "testnet": false,
  "keypoololdest": 1474615308,
  "keypoolsize": 101,
  "paytxfee": 0.00000000,
  "relayfee": 0.00001000,
  "errors": "WARNING: check your network connection, 0 blocks received in the last 4 hours (120 expected)"
}
[ec2-user@ip-172-31-59-190 ~]$ terracoin-cli getauxblock
{
  "hash": "f7144258147bedf6e387ae731cd319ef79106f0f724a2c18df8abd523a142f31",
  "chainid": 50,
  "previousblockhash": "00000000000008b116313c83dc3138b4fe488af03531d754469033e2c5de7e0d",
  "coinbasevalue": 2000000000,
  "bits": "1a0afc20",
  "height": 833000,
  "_target": "000000000000000000000000000000000000000000000020fc0a000000000000"
}
[ec2-user@ip-172-31-59-190 ~]$