This is a test, right Pierre?
OK, here are simple steps on how you fix that.
1: eject CD from drive
2: replace CD back in case
3: remove CD #1 from case
4: insert CD #1 into drive
5: install game
Gotta pick on ya, I know that is a "Doh!" moment.
Just tried it, and sure enough y'all have CD #2 in the drive.