Nokia N73 Asian Language Pack / Chinese Language Pack

Hello,
I have purchased both the above packs, but cannot install on my phone.
My phone is a Nokia N73
My phone shows the message 'unable to open file'
I have extracted all the necessary files to a minisd and then put this into the phone, but the same message is shown if I try to open any of the files.

Any body had a similar issue?
How can this be resolved?

Regards,
Pete.