That would mean you don't have the proper text file, which changes those text lines to match the new items. The text file should've come with the download file.
That's the Slow Trap. Like the Vampire's Slow spell in the original game, although I don't believe any creature uses it anymore. Uses the same icon.
That's the Hail Trap, like the Hailstorm spell.
That's the Invulnerability spell. Makes creature immune to all damage except Lightning, Drain, and Inferno (because that's just how the game hardcoded that function). Invulnerability is not a function used in the normal game, it uses the Armour spell, which the Balance Patch doesn't use.