When I press the `Add...` button in the Attach Databases window I get the following error:

```
TITLE: Microsoft SQL Server Management Studio
------------------------------
Failed to retrieve data for this request. (Microsoft.SqlServer.Management.Sdk.Sfc)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&LinkId=20476
------------------------------
ADDITIONAL INFORMATION:
An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)
------------------------------
The server principal "callisto\dotancohen" is not able to access the database "model" under the current security context. (Microsoft SQL Server, Error: 916)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&ProdVer=11.00.1750&EvtSrc=MSSQLServer&EvtID=916&LinkId=20476
------------------------------
BUTTONS:
OK
------------------------------

```

The mention of "current security context" led me to believe that this is a permissions issue. However, when I open SQL Management Studio as Administrator I can in fact open the `Add...` dialogue but it will not let me browse to the `C:\Users\dotancohen directory` in which my database .mdf file is stored.

This is with SQL Management Studio 2012 RC0 on Windows 7 32 bit. The database .mdf file that I am interested in opening is a 2012 file and 2008 will not open it (my connect.Open() statement fails with 2008, works with 2012). Thank you.

**Note that I am not interested in opening SQL Management Studio as administrator to access the database, but rather I am interested in resolving the issue with the user-opened SQL Management Studio to access the database as a regular user. My C# application running in debug mode can open this database without escalated privileges.**