die Steps haben das Prob. bis dato nicht gefixt:
Redo "choosing an appropriate new fee" above using a NEWTX_SIZE of 500. Create a new address in the same wallet (or a different one, if you want); call this NEW_ADDR. In your transaction history, right click the stuck transaction and select details. Under "Outputs", one of the addresses will usually be highlighted. Copy this address and call it CHANGE_ADDR. If none of the addresses are highlighted, then stop here: you can't use this method. Exit the details dialog and go to the "Coins" tab. Find the coin matching the address found above. Right click it and choose "Spend". If this coin has very low value, less than what you need to pay in the new fee, then ctrl-click other coins before clicking "spend" in order to add more value. Send a transaction to NEW_ADDR (ie. a transaction to yourself) with the new, higher fee. The amount of the transaction doesn't actually matter, but for fee efficiency, it's best to spend all of the BTC associated with CHANGE_ADDR minus the fee.