maConfig Error on MXZ CRM12 Ent

Obviously we are a bit late replying to this, but for future readers,  the first step would be to check that the SQL Server instance that hosts your Maximizer database is actually running.   You can do this by following these steps on the SQL Server Box:

1. Press the windows key (between CTRL and ALT on the  left of your keyboard) and R at the same time.  This will open the run dialog
2. Type Services.msc in the box and click ok
3. Find all services called "SQL Server" or "SQL Server ({instance name})" 
4. By double clicking on them in the list, ensure that they are enabled , automatic, and running.

If these services are running then I would expect the problem is that the computer which is running Maximizer cannot reach the computer which is running SQL over the network.