Same error here too :/
After deleting folders, and downloading again the blocks, it's works... until you close/reopen the wallet and the same error appear again :/
try this one solution from telegram
[telegram] Hey, everyone!
For all who had a problem with not syncing GUI wallet (Swing wallet) there is a solution:
1). download a blockchain bootstrap from:
https://s3-us-west-1.amazonaws.com/cryptochainer/blockchains/BitcoinZ_blockchain.zip2) delete all
excluding wallet.dat (!) in ../AppData/Roaming/BitcoinZ
3) extract downloaded zip file into BitcoinZ directory
4) start bitcoinz-wallet.exe (1.0.1.2) or bitcoinz-wallet.bat (1.0.1.4)
5) enjoy!
Thank for tip ChanceFX.
...Still the same error after restarting the wallet.
resolved by adding "disabledeprecation = 1.0.12" in config file.
Zcashd.exe seems to be the problem...