I think I have some problem.
My address is 9hWttyc1RSwY8FHG6BfTYAwTgphDqxtJyv and I had 7273.916572 NRS.
In the previous NRS, I type dumpprivkey 9hWttyc1RSwY8FHG6BfTYAwTgphDqxtJyv and I got
Private key for address 9hWttyc1RSwY8FHG6BfTYAwTgphDqxtJyv is not known (code -4)
Can you help me?
Do you have a passphrase on your wallet that was used to encrypt it? If so, this is the kind of error message that will be displayed if you do not unlock it first.
(it always acts like it does not have the private key when the wallet is locked)
To unlock the wallet use:
walletpassphrase 600
Then you can dump your private key
(The 600 means 600 seconds or 10 minutes)