This error is caused by ZCash incorporating Overwinter and the fix is simple:
If you are encountering problems in Zelcash FullNode wallet, please open your zelcash.conf file and write following line:
disablesafemode=1
Zelcash_Wallet_0.0.0.2.jar it is the first could wallet. It works on JAVA script I think.
yes, it was the first Zelcash full node wallet, but changes to Zcash protocol affects all forked coins from them. Moving to Overwinter broke the swing wallets for all coins including ZCash. Adding the line above to your config file fixes the problem.