Upgrade key doesnt work

I just installed the 5582 build after a fresh install of Leopard on my MacBook Pro and bought an upgrade key. After I typed in the new key the software asked me to type in my old key. I did but now it keeps telling me that its not valid. But it is since I bought it a year ago and it worked fine before the upgrade.

Did anybody has any ideas?

Thanks in advance,
Arne

 

Hello,

perhaps there is a problem with your key, i.e. you have mixed up some symbols.

Best regards,
Stacey

 

The Parallels Support answered me: Its because the old key is for an english version and the new one is for a german one. Its not possible to make a cross-lingual upgrade.
They refunded my card and i bought the english upgrade: now its all fine.