You can try this but note that it needs to be followed to the letter .
Cannot load module - invalid IFO file .
There is an issue known as the IFO module error, you get that error when trying to to change zone (mostly in chapters 2 and 3).
To fix this, you need to make some changes to your OS in order to view certain files, first, if you are under XP, go to my computer, get on your C drive, open the tools menu -> Folder options, View tab. In there, look for "Hidden files and folders", click on show hidden files and folder. Next look for "Hide protected operating system files", uncheck it.
If you are under Vista, go to the control panel and look for folder option, the rest of the procedure is the same : View tab. In there, look for "Hidden files and folders", click on show hidden files and folder. Next look for "Hide protected operating system files", uncheck it.
Now, start the game, and load your savegame ( normal savegame, not quick or auto ). Once it is loaded, press ALT-Tab to get out of the game, go to the following folder:
Windows XP/2003: C:\Documents and Settings\<your user name>\Local Settings\Application Data\The Witcher\temp\saves\<name of your loaded savegame>
Windows Vista/7: C:\User\<your user name>\AppData\Local\The Witcher\temp\saves\<name of your loaded savegame>
In that folder, delete all the files that end with the .SAV extension.
Then go back in the game, move around a bit, save your game and reload it.
