Backup your wallet.dat, remove your .bridgecoin (or %APPDATA%/Bridgecoin) folder and re-sync from scratch. Once synced, copy the original wallet.dat back into the projects.

Announcing BridgeCoin update 1.0.3 - HARD FORK

We've detected an offset in coin calculation, which would result the number of coins to be larger than 27 million. As we would like to keep the initially promised number of coins, we've decided to modify the blockchain consensus code, which will result in a hard-fork for all nodes using client version older than 1.0.3.

The consensus change only affects coins possibly mined after (and including) block 166954 (estimated time - November 28-29, 2017). All coins mined before that block are and will remain safe.

Again we urge all users, mining pool operators and exchanges to upgrade ASAP or at least before block 166954 in order to avoid disruption. All the nodes behind DEX and our seed nodes have already been upgraded.
If you are not using bridgecoin-qt client, you are not affected. If you're only using the CryptoBridge client you are not affected as well.

Downloads and links to github source code are available at https://bridgecoin.org/#three