RaceCompatibility Manual installation steps:

1. Do you have Dawnguard? Yes: Go to 3. No: Go to 2.

2. Do you use The unofficial (Legendary) Skyrim patch (USKP/USLEEP) and/or the Ultimate Follower Overhaul (UFO)? No: Go to 2A. Only USKP/USLEEP: Go to 2B. Only UFO: Go to 2C. Both: Go to 2D.

2A. Install the contents of "10 Vanilla". DONE!

2B. Install (in order) the contents of "10 Vanilla", "11 Vanilla USKP" and "13 Vanilla USKP Override". DONE!

2C. Install (in order) the contents of "10 Vanilla" and "14 Vanilla UFO". DONE!

2D. Install (in order) the contents of "10 Vanilla", "12 Vanilla USKP + UFO" and "13 Vanilla USKP Override". DONE!

3. Do you use The unofficial (Legendary) Skyrim patch (USKP/USLEEP) and/or the Ultimate Follower Overhaul (UFO)? No: Go to 3A. Only USKP/USLEEP: Go to 3B. Only UFO: Go to 3C. Both: Go to 3D.

3A. Install (in order) the contents of "20 Dawnguard". Go to 4A.

3B. Install (in order) the contents of "20 Dawnguard", "21 Dawnguard USKP" and "23 Dawnguard USKP Override". Go to 4B.

3C. Install (in order) the contents of "20 Dawnguard", "20 Dawnguard Script" and "24 Dawnguard UFO". Go to 4A.

3D. Install (in order) the contents of "20 Dawnguard", "22 Dawnguard USKP + UFO" and "23 Dawnguard USKP Override". Go to 4C.

4A. Do you use Better Vampires OR Vampiric Thirst? Yes: Go to 5. No: Install the contents of "20 Dawnguard Script". Go to 5.

4B. Do you use Better Vampires OR Vampiric Thirst? Yes: Go to 5. No: Install the contents of "21 Dawnguard USKP Script". Go to 5.

4C. Do you use Better Vampires OR Vampiric Thirst? Yes: Go to 5. No: Install the contents of "22 Dawnguard USKP + UFO Script". Go to 5.

5. Do you use Better Vampires? Yes: Go to 6. No: Go to 7.

6. Install the contents of "30 Dawnguard BetterVampires". Go to 9.

7. Do you use Vampiric Thirst? Yes: Go to 8. No: Go to 9.

8. Install the contents of "40 Dawnguard VampiricThirst". Go to 9.

9. Optional vampire lord transformation fix. This ensures your current player race is stored before each transformation. Without this fix it will only be stored once. This will only be a problem if you change race mid-game. Certain mods that modify the vampire lord transformation may conflict with this fix.
Do you wish to install it? Yes: Go to 10. No: DONE!

10. Install the contents of "25 Dawnguard Vamp Lord Transform Fix". DONE!