Thank you both. I looked through the script using FO3Edit and it definitely saved as a quest script. The script is:
scn ItemAddScriptBegin GameMode If Player.GetItemCount VaultTecSpecOpsArmor < 1 Player.AddItem VaultTecSpecOpsArmor 1 Endif If Player.GetItemCount VaultTecGaussRifle < 1 Player.AddItem VaultTecGaussRifle 1 Endif If Player.GetItemCount AmmoVTGauss < 1 Player.AddItem AmmoVTGauss 50 EndifEnd
Basically, he wanted to ensure that he could use his favorite armor and weapon in the DLCs, since some of them clear your inventory at some point or other. There were no errors when I saved it and I copy/pasted the item names to ensure there were no typos. Luckily, I had a backup of the original .esp he sent me. I started over with that and got it to work. I don't know why it worked the second time around, but it's not the first time something like that happened to me. :shrug: