Obsidian Entertainment has issued a hotfix for Mask of the Betrayer, the expansion to Neverwinter Nights 2 (thanks: The Patches Scrolls). If you do not apply the hot fixes, when you attempt to play the game you will see sections of missing text and the Campaign name will say it is undefined.

NWN 2: Mask of the Betrayer Missing Text Hotfix (English) (3.58MB)

NWN 2: Mask of the Betrayer Missing Text Hotfix (German) (7.25MB)

NWN 2: Mask of the Betrayer Missing Text Hotfix (French) (7.12MB)

NWN 2: Mask of the Betrayer Missing Text Hotfix (Spanish) (7.04MB)

NWN 2: Mask of the Betrayer Missing Text Hotfix (Italian) (7.16MB)