Hi all,
i reinstalled windows and download MTC wallet.I let it sync (about 2 million blocks) and after I tried to import my private key ( insertprivkey xxxxx) and I get "code":-4,"message":"Error adding the key to wallet".
Also, I tried to replace the wallet.dat file with mine but when I open MTC wallet is not opening at all, I can see it in right side taskbar but no window. Also, the process is there and eating about 30% of resources. I have stopped my antivirus as well.
Any suggestion good to come or I will be absolutely mad if I lose tens of millions even if I back up my wallet in all possible ways!