You find the version of the course at the backside (right, bottom) of the DVD-cover.
All versions. Message: This registration number is already in use
This message is given when
a)
you installed the course on another computer without deactivating.
b)
you started the course from a different location on the same computer. For example, first from DVD and later from hard disk.
c) for the first time, you closed the course by removing the DVD instead of closing the window. In this case it is possible that the registration information is not stored.
Deactivate the course (see below) and try again.
All versions. Deactivate