dunc001

This is a long winded process so buckle up!

You will need MfgConsole installed (SKSE plugin) and NifScope. In game you need to look at the purple item, open console (~) and with Mfg you should now have additional info in the console window. Place your cursor over the purple texture and click. It will then display the formID of the item in the bottom right along with the last esp to modify it. Load up TES5edit with that esp, enter the formID in the top left search box and click enter. This should take you to that record. Look down until you find the MODL which will give you the mesh path.

Next, back in Mod Organizer in the right hand pane click on the data tab and scroll down until you find the meshes folder. Navigate in until you locate the mesh you just identified in TES5Edit and take note of which mod is now providing the mesh.

Open that mesh in NifScope and click on each NiTriShape in the list until you identify the part of the mesh with the texture problem. Expand the NiTriShape in the list and click on NiTexturingProperty. And there, finally, you will find the texture path you need.

Now back into ModOrganizer, into the data tab again and this time down to the texture folder. Navigate in to the texture path you've just identified and take note of the mod providing the texture. And that's it, that's the one you need to fix.
 
 
BTW - If anyone has a quicker way of getting to the offending texture please feel free to override me. 

UPDATE - FIXED (NEARLY...)
 
So having spent much time reading and trying various 'fixes' none of which worked, including reinstalling the DX End User Runtime (June 2010) then the DX files from the Skyrim directory, then 2010 again; various ini settings in various ini's; crash fixes 11 through 12b4; just SKSE memory patch; and so on I alighted upon THIS THREAD detailing pretty much exactly the same issues as I was having.  And I found one thing mentioned late on in the thread which I hadn't tried.  I replaced the 305 enb files with those from 262 et voila, crashes gone completely.  In every profile.  In vanilla through Steam.  Gone.
 
Now this leaves me happy that I can actually get into the game and play test, but sad because with .262 I don't have any options really for VW compatible ENBs :(

UPDATE - FIXED (NEARLY...)
 
So having spent much time reading and trying various 'fixes' none of which worked, including reinstalling the DX End User Runtime (June 2010) then the DX files from the Skyrim directory, then 2010 again; various ini settings in various ini's; crash fixes 11 through 12b4; just SKSE memory patch; and so on I alighted upon THIS THREAD detailing pretty much exactly the same issues as I was having.  And I found one thing mentioned late on in the thread which I hadn't tried.  I replaced the 305 enb files with those from 262 et voila, crashes gone completely.  In every profile.  In vanilla through Steam.  Gone.
 
Now this leaves me happy that I can actually get into the game and play test, but sad because with .262 I don't have any options really for VW compatible ENBs :(