I had same problem a couple of week ago the only way it would work was moving wallet.dat from roaming/kryptcoin folder then deleting the kryptcoin folder and then downloading the whole blockchain then replacing the wallet.dat
took me 2 days
Maybe I should try it. trying over and over again with deleting everything except wallet.dat and blik001.dt, but stops syncing everytime. Have 933k KTK on bittrex but want them in a wallet, lost too many coins already on coinmarket.io and mintpal. But when the wallet works this bad, I maybe should sell the coins. Anyone interested in 933k KTK?
Yes I am. You really gonna sell because you can't get the wallet to work? First off do this before you get all crazy and unload your coins days before the marketplace will come out.
1. Follow the below only if you have problems syncing and do not have any coins in your wallet.
2. Delete everything KTK...ie wallet, downloads, all folders, etc. in Roaming and anywhere else you have anything KTK related.
3. Do a computer search for KTK and delete any files that come up (hopefully none, but you'd be surprised).
4. Download wallet from OP for your OS.
5. Open wallet. IF any errors occur, close it and reopen.
6. Once wallet opens, close it down.
7. Go to OP and get the config file for nodes.
8. Make config file (if you don't know how to do this let me know and I'll make one for you and then sent it to you)
9. Place config file in KTK roaming file (same folder as all other files)
10. Open wallet back up and let sync. Might take awhile. It is a memory hog so close all other programs for faster downloading.
IF this does not work for you then PM me and I will get you through it another way. Do not sell.