Hi!

I'm doing the thieves guild quest where you are going to the catacombs with blind monks ( Turning a Blind Eye) to take their Stone from them.
However, I can't open any doors and neither can the NPC's. I can see the NPC's just running towards me where the door is, but as I said they can't open either. I've tried opening doors in forts and it works fine.

I can however go through doors that lead me to the other part of the catacomb, hope you know what I mean with that....I mean I can click on doors that take me to a other level of the catacomb. The doors I can't come through are doors that you just get through inside that part of the catacomb, without coming to another level of the catacomb. I hope I didn't complicated things now;P

Any ideas?

1. What kind of system are you using-PC, Xbox, or PS3?
2. If you are on a PC what mods are you using, Post Your Load Order. If you have OBMM copy paste the Load Order that is generated by clicking on Import/Export and selecting view Load Order, If you have Wrye Bash Left click on the file header and select list mods then copy/paste the results.

HorseCombatMaster.esm
Oscuro's_Oblivion_Overhaul.esm
IlluminationWithin.esp
Knights.esp
DLCShiveringIsles.esp
Kvatch Reclaimed.esp
ClocksOfCyrodiil.esp
Oscuro's_Oblivion_Overhaul.esp
The Lost Spires.esp
Dwemer_Skyship_1_1_0.esp
Haunted_House_v1.5.esp
xuldarkforest.esp
Natural_Weather_by_Max_Tael.esp
Natural_Water_by_Max_Tael.esp
Natural_Habitat_by_Max_Tael.esp
Natural_Vegetation_by_Max_Tael.esp
MidasSpells.esp
Barbada_Island.esp
Valenwood Improved.esp
ElsweyrAnequina.esp
LostSpires-Everglade patch.esp
LostSpires-DarkForest patch.esp
Deadly Reflex 5 - Timed Block and 250% damage.esp
DeadlyReflex 5 - Combat Moves.esp

Is my loadorder.

Anyone?

Try using the Unofficial Patch, The Unnofficial Shivering Isles Patch, and the Unnofficial Official Mods Patch, and the Supplemental Patches by Arthmoor.
If your problem is a known bug, the Unnofficial Patches might fix it.
The advice in the spoiler tag is a cheat, and might get you past the door, unless the problem is caused by a script.

Is there a chance that on of the mods won't work if I install any of the patches?

The Unofficial Patches just fix known flaws in the game, but you should check the readmes in your mods and the descriptions on the sites you downloaded the mods from. There is a mod called http://www.tesnexus.com/downloads/file.php?id=28537 that is designed to keep the Weapons changes for OOO and allow the bugfixes of the Supplemental Patches by Arthmoor- I use OMOBS myself for my FCOM build.
I forgot to add that you could check the Unofficial Elders Scrolls Pages http://www.uesp.net and see if your problem has happened to someone else before, and how to fix the issue.
EDIT added links

Okay thank you!:) I will see if I can fix the problem when I have the time.