Hello,
I have been working with c-cex-yuriy on IRC to try and fix the issue with their wallet.dat. After reading the debug and error messages, we came to the conclusion that the wallet.dat has a corrupted or missing section, possibly due to the daemon being terminated before letting it flush data to disk. After attempting numerous repair tools on the damaged wallet.dat, I offered to compare C-Cex's broken wallet.dat to a working wallet.dat (empty one generated on my own computer) in a hex editor and attempt a manual repair of the wallet.dat. Please understand there is no guarantee that I will be successful in fixing the wallet in this way, and it is strictly best-effort. Yuriy accepted the offer, and will be sending me the wallet.dat over a secure tunnel. At the conclusion, regardless of outcome, I will shred all copies on my hard drive of C-Cex's wallet.dat using the 'shred' command. I will also be in contact with the developer of VNL over bitmessage, john-connor.
Thank you,
tf2honeybadger / Kevin
Poloniex Wallet Manager
Thanks for Your kind offer to help. Indeed, wallet.dat suffered from terminating daemon each time because rpc "stop" command is not working in daemon. It gives "methd not found". And that happened to all backup we have. Also, this wallet.dat turned to be not compatible with standard bitcoin's wallet.dat tech.
