I recently switched from Better Megaton Home to a fomod of Megaton House and Theme Overhaul. I schlepped all my gear out of the old house and went through the usual clean save and reload. I like the new house, though I noticed some floor texture problems (apparently a known problem with MHATO), but that was the only issue. Then later I created a fomod of WillieSea's BridgeTown, and activated it. Suddenly I had slightly hallucinogenic lights breaking through, slightly and then stronger, both inside the house and outside at night in Megaton. I deactivated the fomod but the effect resumes each time I enter Megaton at night. (I have not observed the effect by day, though I haven't spent much time in Megaton lately.) There is no WillieSea subdirectory under Textures, so it looks like the deactivation worked properly. Those were the only two fomods among the limited number of mods I'm using. I would appreciate any advice.

Here is my freshly-exported load order:

[X] Fallout3.esm
[X] Anchorage.esm
[X] ThePitt.esm
[X] BrokenSteel.esm
[X] PointLookout.esm
[X] Zeta.esm
[X] Unofficial Fallout 3 Patch.esm
[X] CALIBR.esm
[ ] DCInteriors_ComboEdition.esm
[X] Unofficial Fallout 3 Patch - Operation Anchorage.esp
[X] Unofficial Fallout 3 Patch - The Pitt.esp
[X] Unofficial Fallout 3 Patch - Broken Steel.esp
[X] Unofficial Fallout 3 Patch - Point Lookout.esp
[X] Unofficial Fallout 3 Patch - Mothership Zeta.esp
[X] DarNifiedUIF3.esp
[X] Less Useless Karma Gifts 2.0.esp
[X] Rude Awakening.esp
[ ] DelayAnchorage.esp
[ ] DelayThePitt.esp
[X] DelaySteel.esp
[X] delaypl.esp
[X] delayzeta.esp
[X] Delay ThePitt + Anchorage.esp
[X] Megaton House and Theme Overhaul.esp
[X] Dragonskin Tactical Outfit.esp
[X] CantaburyCommonsGuards.esp
[X] CanterburyCommonsInteriors.esp
[X] Slower Degradation (-50%).esp
[ ] better megaton home.esp
[X] 1alexscorpionsnipergear.esp
[X] Confessor Cromwell has a Break_EV.esp
[X] MinuteMinder.esp
[X] NoLockTopic.esp
[X] Down Under.esp