Hi,
thanks for your reply.

I'm trying to mine.
I installed windows GUI(Credits version v1.1.1.0-beta (64-bit)) and synchronized completely.
Windows 10 64bit i5 8gb ram 256ssd.
On debug console : setgenerate true 4
then
{

  "blocks": 315084,

  "currentblocksize": 1000,

  "currentblocktx": 0,

  "difficulty": 0.654544909760994,

  "errors": "",

  "genproclimit": 4,

  "networkhashps": 10473991.18327355,

  "pooledtx": 0,

  "testnet": false,

  "chain": "main",

  "generate": true,

  "hashespersec": 9270

}

For 2 or 3 days , result balance = 0 and looking in the logs I found the previously posted error.

Mistake something, I'm missing some configuration?
thank you
Daniel