Mandatory update X.18.3.20:
We've done hard fork at height 106195, please update your wallets:

Windows:
http://bitsum.uz/files/wallet_cli.zip
http://bitsum.uz/files/twallet_cli.zip

Linux:
http://bitsum.uz/files/wallet_cli.tar.gz

Also you can download blockchain snapshot:

Windows:
http://bitsum.uz/files/bitsum_blockchain.exe

Linux:
http://bitsum.uz/files/bitsum_blockchain.tar.gz