A query cannot update a text, ntext, or image column and a clustering key at the same time
The above error was killing my team's time.Here how we solve this.
Here we goes...
Right Click on Table-->Design Mode -->Right Click on Coloumn Name -->Indexes/keys..-->Uncheck "creat as clustered"

For more
http://groups-beta.google.com/group/microsoft.public.sqlserver.programming/browse_frm/thread/ad3b8622be49ea94/3276e0519e823bad?tvc=1&q=a+query+cannot+update+a+text,+ntext,+or+image+column+and+a+clustering+key+at+the+same+time&hl=en#3276e0519e823bad
Cheers..
Suresh Behera