So another one.
If your running your EV install on Windows 2008 and you move the SQL database to another server.
Your auditing may fail even after following the documents on moving the database.
Also if you try the create the odbc record for EVAudit it will still fail.
The reason being this creates a 64bit odbc source so unless you go in to regedit or use the windows\system32 odbc editor you cannot modify the 32bit datasources