:banghead:
I have no mods that alters the quests out come, just the option to lie to the Van Graff's goon that Cass is dead to save here life.
Unless you wrote the mod you can't speak to what it all effects. You'd be amazed at the bugs mods can cause, things that seem completely unrelated can cause conflicts.
Now this is very important... WHEN did you turn over the evidence
before or
after the 1.02 patch. You haven't said you did the quests before patching the game. If you turned in the evidence after patching the game. Then as the wiki says
Turning in the evidence turns the Van Graffs permanently hostile. . Having done Birds of the Feather is
Irrelevant A trigger in heartache by the numbers makes them hostile with the 1.02 patch.
Reload your game from before getting the pulse gun, go to the Van Graff's and confirm there still friendly at that point.
What's the problem? Just kill the Van Graff's and take their stuff. You have done their quests after all.
Would you permanently wipe out the gun runners to take there stuff? Do you kill all the merchants rather then shop from them?