When I go to add the "spells" unit entry into my list and then look through the list of available spells to show, the Lore of Nehakara is not showing up.

never mind, i figured it out

upgraded spell values
 

The casting value of the upgraded Khsar's Incantation of the Desert (signature spell) says 10+ when it should be 16+.

The first spell "Djaf's Incantation of Cursed Blades" says 18+ when it should be 10+.

Necro Knights are monstrous cav and thus should have the STOMP rule.
Time of Madness

Fixed for next release.

Ramhotep The Visionary should have an Extra Hand Weapon the same as a Necrotect, and therefore coupled with his Frenzy ability, should have his attacks characteristic as 2/4.

Am I correct?

Yup. Fixed.

Casket of Souls rules.
Light of Death: Says suffers automatci wound with no save. It should be automatic wound with no armour save.

The rule for Unleashed Souls has no saves can be taken. It should be "no armour saves can be taken.

Fixed for next release.

Ushabti , They come standard wtih Great Weapons. But they can replace the Great Weapons for free with one of the Following, Great Bows and Additional Hand Weapons.

The Army Builder entry does not have the Great Weapons selected. Also, it allows you to add Great Weapon, Great Bow and Extra Hand Weapon at the same time without error.