I just can answer to this question by myself

If you have the problem that the wallet doesn't start to sync after you did a fresh install download the latest blockchain (I/O Coin Protocol 60017 DIONS BlockChain Files Block 1618642) files from this side:
https://github.com/IOCoin/DIONS/releasesFollow the replacement steps on this page and you will bring back the wallet to work

best regards