[Japo]

Did you follow in the instructions below the review?

It's normal that there are tons of files on the CD not on the HD, the installation is minimal, and everything else would be duplicated (since the CD is already in an image file on the HD).

Better than copying files by hand, you can try erasing and re-installing from the CD (ISO). You can then patch it to the latest version by downloading the "extras from the Bethesda release" (link at the top of the review, to the right of the main download link) and running the patcher in it.