You might have better luck to go to their website and get help:

http://support.divx.com/faq/view/supportFAQen110/How%20do%20I%20register%20a%20device%20from%20the%20DivX%20Player

why why why do u do this FF. isn't better if u trying doing some add-on for things before you put out a new version.. it didn't say that half of my programs would need add-on.. again another fk up..

I have the exact same problem NONE of the sites that use a divx player will work its a beyond a joke, ive been to divx site downloaded the latest verion and it make no difference!!!!

Just so that you know: you need to download and install the latest version of DIVX sometimes cause the updates are contained in the newer versions

also if you go on torrent sites you can sometimes find product keys to gain better features of DIVX