Saves aren't compatible. You will get crash on attempt to save and possible other events (like using statuettes).
Don't use this patch. There was an error with the latest digital edition patch and the current 1.005 version not only lacks the newest updated changes advertised for the digital release, but it also lacks changes from any and all patches after 1.0029, including several quest-related fixes. If you have the disk version, patch it to the latest official patch (1.0034), and play it like that.
Users of 1.005 are basically playing the unpatched, buggy original release of the game with widescreen support.
