An error occurred during the execution of the SQL file 'InstallCommon.sql'

Feb 9 at 7:22 PM
When I pressed on the security tab in asp.net configuration I get this message

There is a problem with your selected data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button below to be redirected to a page where you can choose a new data store.

The following message may help in diagnosing the problem: An error occurred during the execution of the SQL file 'InstallCommon.sql'. The SQL error number is 5170 and the SqlException message is: Cannot create file 'E:\PROMVC3\MVCMUSICSTORE\MVCMUSICSTORE\APP_DATA\ASPNETDB_TMP.MDF' because it already exists. Change the file path or the file name, and retry the operation. CREATE DATABASE failed. Some file names listed could not be created. Check related errors. Creating the ASPNETDB_adc8b4a6e5c044e3b333ad716d92d822 database...