I have tried to send a few times coins to Stock Exchange but even though they disappear from the wallet they don't show up in Blockexplorer and of course they don't arrive in Stock Exchange. Nor the transaction is appearing in blockexplorer. The first time I have sent 1000 TWIST, so not a joke. Which could be the cause?
it seems its your wallet problem, try this
- go to debug window
- enter this command:
repairwallet
- wait for that to finish, and try again
if this doesn't worked, try backup your wallet once, and re-sync your wallet, that will surely solve any problem on your side.