I saw pictures about this issue. Could you try to set schema for tables and views to dbo?
cite from the page: "When I use SQL Management Studio I do not get the 'Modify' option, only 'Design' or 'Edit'. If you have Visual Studio (I have checked VS.NET 2003, 2005 & 2008) you can use the Server Explorer to change the schema. Right click on the table and select 'Design Table' (2008) or 'Open Table Definition' (2003, 2005). Highlight the complete "Column Name" column. You can then right click and select 'Property Pages' or Properties (2008). From the property sheet you should see the 'Owner' (2003 & 2005) or 'Schema' (2008) with a drop down list for possible schemas."
before you start modify DB, please consider to backup.