If I want to save any changes in a table, previously saved in SQL Server Management Studio (no data in table present) I get an error message:
Saving c
To work around this problem, use SQL statements to make the changes to the metadata structure of a table.
This problem occurs when "Prevent saving changes that require table re-creation" option is enabled.
Source: Error message when you try to save a table in SQL Server 2008: "Saving changes is not permitted"