According to the Komodo website, XPTX needs to be BIP65 compatible/enabled and needs to have the following API calls:

estimatefee
getblock
getblockhash
getinfo
getrawmempool
getrawtransaction
gettxout
importaddress
importprivkey
listunspent
listreceivedbyaddress
listtransactions
sendrawtransaction
signrawtransaction
validateaddress

 Any idea if it's BIP65 ready?