I have the steam version so I just used the exe and it really does not glich. However I would suggest on the last quest to save often. I have experienced Sarah not coming in with me to the same inner cell where the purifier is. It could just be mine, I just wanted to make everyone aware of the possible pain.
Seems to me- this is common problem. Interesting- how it work with 1.5 patch?
(from my Nexus post)
So- I finish quests Project Unpurity and Take it back
All (almost) was fine, I die and then resurrect in the citadel. After speaking with elder Lyons both quests was closed and was beginning new quest- Death from above.
My config:
Steam FO3 ver. 1.5+ fallout3.exe ver. 1.0+ fake patch+ UF3 patch+ RemapWaterType.esp (which was plugged in after entering to Jefferson Memorial but before activating Project Purity)
Problems:
-I don't understand the purpose of the RWT plugin- it don't change anything for me. No bugs, no CTD-s, and water in Potomak still be radioactive. I try both variants- with plugin and without it. Seems to me it can be something wrong with it, or I don't understand something.
At the same time- esp from Free Play after MQ work fine.
-Sara Lyons don't follow me to the Rotunda, so final script can't start. I play from not my final save, and can't say anything about source of the problem.
Solution.
-simply unlock the door with consolre
-or teleport Sara with console to player
Both variants work the same
I think it is possible force teleport Sara to player before speech with colonel Autumn