This error means that the program you are running is older than the database you are trying to connect to.
This usually happens when reinstalling. Be sure you are using the most recent CD that you received. Also, it is likely that you downloaded some update in the past, and so you need to install that update again. Look for a file named "CamelotUpdate###.exe" where the ### is the version you need to update to - or the database version listed in the error message you are receiving.
If you are on a network, and some of your computers are giving this error message, and others are not, then you can actually just copy the Camelot.exe program file from the C:\Program Files\Camelot folder on one of the computers that does not give this error message to that same folder on the computer that does give you the error message.
