NOTE:
Use RPC to send coins if you get a warning using the send tab in the GUI...
EXAMPLE:
First fully unlock your testnet wallet.
sendtoaddress jMZfW9yKwbcujSpTWQnmUn3aJkhgg2Wix5 before and after the amount of coins>
I'm still unable to send tKORE to that address

Invalid KORE address (code -5)
Note: I'm still using v0.13.0.1