2015-02-19 21:06:27 GetNextWorkRequired DIGISHIELD RETARGET
2015-02-19 21:06:27 Params().TargetTimespan() = 300 nActualTimespan = 267
2015-02-19 21:06:27 Before: 1e114863 0000114863000000000000000000000000000000000000000000000000000000
2015-02-19 21:06:27 After: 1e0f61b4 00000f61b4451eb851eb851eb851eb851eb851eb851eb851eb851eb851eb851e
2015-02-19 21:06:27 ERROR: ContextualCheckBlock : block height mismatch in coinbase
2015-02-19 21:06:27 ERROR: ProcessNewBlock : AcceptBlock FAILED
2015-02-19 21:06:36 nActualTimespan = 36 before bounds
2015-02-19 21:06:36 GetNextWorkRequired DIGISHIELD RETARGET
2015-02-19 21:06:36 Params().TargetTimespan() = 300 nActualTimespan = 267
2015-02-19 21:06:36 Before: 1e114863 0000114863000000000000000000000000000000000000000000000000000000
2015-02-19 21:06:36 After: 1e0f61b4 00000f61b4451eb851eb851eb851eb851eb851eb851eb851eb851eb851eb851e
2015-02-19 21:06:50 GUI: flush: BitBlt failed (Descripteur non valide)
2015-02-19 21:06:50 GUI: flush: BitBlt failed (Descripteur non valide)
2015-02-19 21:07:36 nActualTimespan = 36 before bounds
2015-02-19 21:07:36 GetNextWorkRequired DIGISHIELD RETARGET
2015-02-19 21:07:36 Params().TargetTimespan() = 300 nActualTimespan = 267
2015-02-19 21:07:36 Before: 1e114863 0000114863000000000000000000000000000000000000000000000000000000
2015-02-19 21:07:36 After: 1e0f61b4 00000f61b4451eb851eb851eb851eb851eb851eb851eb851eb851eb851eb851e
You're not attempting to mine on mainnet, are you?
port 14412 and supcoin-qt.exe -testnet
so i'm on the testnet i guess
isn't it supposed to be -testnet=1 ?