I've tried multiple times now to get to the Penthouse Suites in Tenpenny Tower. Every time I go through the elevator doors though, the game places my character on top of the chair with the security guard. I go through the dialogue box with him but I cannot move from this spot. Any help would be greatly appreciated.

Bump. I really need this fixed. I've been told to complete the quests I have left AFTER the Tenpenny quest but I can't access it without this fixed.

Using any mods?

I am. I guess I should have noted that. It'd probably be best for me just to post my load order.

Fallout 3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
Point Lookout.esm
Zeta.esm
EVE.esm
FNNIguana.esm
Mart's Mutant Mod.esm
Enhanced Weather - Rain and Snow.esm
Xepha's Dynamic Weather.esm
EVE.esp
Delay ThePitt + Anchorage.esp
DelayAnchorage.esp
DelayThePitt.esp
delaypl.esp
delayzeta.esp
Expanded Megaton House V3.esp
Night Vision Sunglasses.esp
Realistic Death Physics.esp
Mannequin.esp
MTC Wasteland Travellers.esp
MTC Wasteland Travellers (Optional) - Crowded Cities.esp
FNNIguana - MMMRC6.esp
Mart's Mutant Mod.esp
Mart's Mutant Mod - DLC Anchorage.esp
Mart's Mutant Mod - DLC - The Pitt.esp
Mart's Mutant Mod - DLC Point Lookout.esp
Mart's Mutant Mod - DLC Broken Steel.esp
Mart's Mutant Mod - DLC Zeta.esp
Mart's Mutant Mod - Natural Selection.esp
Mart's Mutant Mod - Tougher Traders.esp
MMM - Stank's Eggs + Vendor v 1-4.esp
Mart's Mutant Mod - Master Menu Module.esp
Enhanced Weather - Rain and Snow in Fallout.esp
Enhanced Weather - REBOOT.esp
Enhanced Weather - Radioactive Rain and Snow Plugin.esp
Enhanced Weather - Sneak Bonus during Storms.esp
Enhanced Weather - Weather Sounds in Interiors.esp
Xepa's Dynamic Weather - Main.esp
Xepa's Dynamic Weather - Anchorage.esp
Xepa's Dynamic Weather - Broken Steel.esp
Xepa's Dynamic Weather - Point Lookout.esp
Xepa's Dynamic Weather - The Pitt.esp
Xepa's Dynamic Weather - Rain.esp
Xepa's Dynamic Weather - Sandstorm.esp
GalaxyNewsRadio 100[M].esp

There you have it. Any ideas?

Try this Site: http://www.tweakguides.com/Fallout3_1.html
Maybe, you can find something that would help. I don't like to use mods as sometimes unexpected results happen. But, I use the console, which is the key between Esc and Tab. to get thru a locked door, or to unlock a safe, for exemple.

Oh crap, I forgot about this topic :facepalm:

Dash, EVE places a weapon in Alastair Tenpenny's suite (pulse pistol, I believe) which causes the lockup you're experiencing. Remove the gun in FO3Edit and things should be back to normal up there.