reddvii: Reiterating this: The Temple of Henna south of Ligano is missing and a dirt pile in the area next to it is also missing. To restore them, you'll need to rename or delete 8618.ETC and 8618.V56 in your BiA installation folder.

These are most likely bugged Sierra patch files; a script and a map for this one area in the game. Removing them doesn't actually hurt anything, it just forces the game to use the script found in the RESSCI files. Trust me, you won't need these. And you'll probably never return to the temple after Chapter 1 anyway.