java.io.IOException: Keystore was tampered with, or password was incorrect
AntiVirus running on the machine with the Storage Engine touched the keystore file, and it became corrupt.
Exclude the Storage Engine folder (and the Storage folder) from antivirus the move on to Resolution 2 or 3
Upgrading to the latest version/hotfix will generate the files again with no data loss.
To do a reinstall and preserve the data walk through the following steps;
_move the Storage Engine folder to another location
_stop all services
_move the Storage Engine folder back to server