I was able to restore a old wallet and i've regained the old value of gridcoin, but i'm unable to send it out, it seems... i receive no confirm and this time i didn't receive the transfer at all on the new wallet.
Something going wrong in my previous reply, deleted the reply, so again,
My first reply,
I had that a couple of times also, what helped me,
- exit gridcoin
- restart gridcoin, if you are lucky the transactions do not show up anymore and you have the original balance back before the transactions were made, then try again
if that did not work and you have a back-up, delete your wallet and replace it with the back-up (important is that it is a back-up from the encrypted wallet, NOT a back-up from the time the wallet was still unecnrypted).
Based on the new problem, I also experienced that, restore the back-up again and just wait for one hour. Then try a small transaction first, do not leave the send screen until the transaction has finished and shows up at the bottom of your screen.