A serial is entered for each add-on disk.

That said, they seem to be using common serials for the Add-ons, and unique ones for the Expansion Packs (yes they ARE different).

They have posted some "common" serials for add-ons 1-3 on the Realflight web site for those who were having difficulty installing the add-ons.


However.... and more immediate.

The Add-ons periodically check for the original disks at random times.

You are prompted to insert the disk when it's time to check it.

If you've installed his copy, you will not be able to do this.



And technically you are off course violating their licensing/copyright....