-4 normally means you forgot to unlock your wallet first
Wow that could be it but im getting this message now:
walletpassphrase
Stores the wallet decryption key in memory for seconds. (code -1)
What can i do to fix that?
to unlock the wallet:
settings>unlock wallet OR
Help>Debug Window> type:walletpassphrase
your_password 120 to keep the wallet unlocked for 2 minutes