Cannot ALTER TABLE in MS SQL

After installing ms sql 2008/2012 you may face new problem which may protect you to alter any table. Something like following
Alter Table Problem In MS SQL

There is a new option added in SQL Server 2008/2012 for modifying tables while using the Table Designed in Management Studio which will prevent saving any changes to a table that needs a drop/re-create of the table.
The error you see

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User canceled out of save dialog
(MS Visual Database Tools)
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Solution:
Tools ->Options-> Designers -> Table and Database Designers -> uncheck the option “Prevent saving changes that require table re-creation”