I posted this upstairs as well but thought I might get a quicker response down here.
 
Probably nothing...but I'm not taking any chances...the little yellow sticker containing what looks like my (rather lengthy) serial number for my X3Pro upgrade (boxed edition)...the one on the back of the first DVD...is all in German.  And guess what?  No, go on, guess.  I don't speak or read German...at least not more than a few cusswords and such.  So...is that, indeed, my serial number and do I have to do anything with it other than enter it when I'm installing X3? 
 
Again, this is the boxed edition I got from Sweetwater so I'm suspecting there's some sort of registration to my account at Cake involved and I want to make sure I'm doing the "right thing".

 
Google-Translate ist dein Freund Ol' Pal

Maybe the Bakers were making some of this?
 

 
(I guess you're lucky, I would have expected it to be in Chinese...  )

The number is apparently a "redemption code".  I followed the bread crumbs and all is well.  I always forget about Google translate.  I'm such a dimbulb.  I love German Chocolate Cake.  Near to death.

German?  .....now we know why the PSA is ..well you know

Tell them to send it in English. Geeze!
I just find that a little weird that it came in the German language.
 

It's twoo, it's twooo?

Gesundheit. 

Hey, Ol Pal!  If all of your recordings sound like a Rammstein cover band, this might be a clue.

Auch der lieber!! VAS DIS ?? 
 
J