Large numbers of missing textures suggest that you clicked through an error message while you were installing the patch.
If you get an error message about the file "pack0.dzip" and click "Ignore", you end up with large parts of your game missing. That's the usual cause of errors like the ones you see.
The solution is to redownload the corrected file (TW2EE_Patch-2.bin), replace the incorrect file that you got during the predownload, and reinstall the patch.
The files can be downloaded here: http://en.thewitcher.com/ee_manual/
The patch installer is the file "TW2EE_Patch.exe". It should already be downloaded, in the same place as your other patch files.