didnt know i could mark this as question so reposting my question. so i bought the premium edition, got home installing it. it installed then went to patch download, that installed, went to enhanced edition i get to about 75% through and it comes up with corrupt file, cant ignore and retry only option is too abort download. would be great if someone could help me out with this

You should be able to register your Witcher 2 key here: http://www.gog.com/witcherbackup

After you do that you'll be able to download the full EE game installer from GOG.com - I'd recommend that since the EE patch is huge anyway.