This is an archive of the phpBB 2.0.x styles that were in our database. The release topics are here for reference, but we no longer host or support these styles.
which file is missing? If its admin/confirm_body.tpl or admin/message_body.tpl then copy it from templates/subSilver/admin/ to templates/RedSilver/admin/
Those are subSilver colors in your screenshot, so I guess you have uploaded RedSilver over subSilver files. You should install it in separate directory, not in subSilver. Read this tutorial.
With permission of the author of this style + the BlueSilver one. I would like to and be willing to create ones for phpBB3. Using the graphics etc from these two styles. Of course a few more would need to be added.