I don't change code in web.config because i use database with SQL Server Managerment Studio Express. But when i try to install, it appear this err:

DotNetNuke Upgrade Error

The Assembly Version ( [ASSEMBLYVERSION] ) does not match the Database Version ( [DATABASEVERSION] )

ERROR: Could not connect to database.

Could not open new database 'C:\DOTNETNUKE\APP_DATA\DATABASE.MDF'. CREATE DATABASE is aborted. An attempt to attach an auto-named database for file C:\DotNetNuke\App_Data\Database.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share. File activation failure. The physical file name "C:\DotNetNuke\App_Data\Database_log.ldf" may be incorrect. The log cannot be rebuilt when the primary file is read-only.

This is code in web.config:

<connectionStrings>
    <!-- Connection String for SQL Server 2005 Express -->
    <add
      name="SiteSqlServer"
      connectionString="Data Source=.\SQLExpress;Integrated Security=True;User Instance=True;AttachDBFilename=|DataDirectory|Database.mdf;"
      providerName="System.Data.SqlClient" />
    <!-- Connection String for SQL Server 2000/2005
    <add
      name="SiteSqlServer"
      connectionString="Server=(local);Database=DotNetNuke;uid=;pwd=;"
      providerName="System.Data.SqlClient" />
   -->
  </connectionStrings>
  <appSettings>
    <!-- Connection String for SQL Server 2005 Express - kept for backwards compatability - legacy modules   -->
    <add key="SiteSqlServer" value="Data Source=.\SQLExpress;Integrated Security=True;User Instance=True;AttachDBFilename=|DataDirectory|Database.mdf;"/>


Please help me. Thanks ^^