Well run the game and try to go online, I think the versions are only minor server variants, in other words it's all the same.
In the past I have found the Updater (when you got it working) simply runs in a loop anyway.
I've learnt not to use the Updater at all and all is fine especially if you have the latest digital download.
PS
I get my updates for the other Nova games directly from the store.
And there are no updates for DFX2 there at all.
http://www.novalogic.com/updates.asp