failed because the following SET options have incorrect settings: 'QUOTED_IDENTIFIER'

Error message:

DELETE failed because the following SET options have incorrect settings: 'QUOTED_IDENTIFIER'. Verify that SET options are correct for use with indexed views and/or indexes on computed columns and/or filtered indexes and/or query notifications and/or XML data type methods and/or spatial index operations.

Solution:

Change definition of QUOTED_IDENTIFIER (ON<-->OFF).

Read about QUOTED_IDENTIFIER in:

http://copypastenet.blogspot.com/2011/05/quotedidentifier.html