Saving changes is not permitted - Sql server

I got an error message when I try to change my table on sql server 2008 R2

Saving changes is not permitted. The changes you have made require the following tables to be dropped and re-created. You have either made changes to a table that can't be re-created or enabled the option Prevent saving changes that require the table to be re-created.

Saving changes is not permitted 

All you need to is go to:

Options -> Designers -> Table and Database Designers ...
and turn off the "Prevent saving changes that requirde table re-creation"

Prevent saving changes that requirde table re-creation

and click OK Twice

User Chenges

Thanks,
Roi