[Val]

Make sure you go into the racial traits and choose to be either a:
1) B5 Standard Race
2) B5 Nomadic Race (No colony ships - not ready for prime time)
3) B5 Ancient Race (Vorlon/Shadows/Torvalus/Kirishiac)

Then be sure to choose a race o you have access to their weapon/tech tree.

The reason you are likely getting errors for some of the races (probably Brakiri, Vree, Drazi & Raiders) is that those are unfinished sets. Just go to the B5ModGold/Pictures/Races folder and move those folders elsewhere.