After the installation of DNN 4.0.3, when I browsed to the website, all the default modules in the front page have errors. This is one of the errors that I got from the log viewer:

ModuleId: 365
ModuleDefId: 102
FriendlyName: Links
ModuleControlSource: DesktopModules/Links/Links.ascx
AssemblyVersion: 04.00.03
Method: Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader
FileName:
FileLineNumber: 0
FileColumnNumber: 0
PortalID: 0
PortalName: My Website
UserID: 1
UserName: host
ActiveTabID: 36
ActiveTabName: Home
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://localhost/bgc/Home/tabid/36/Default.aspx
ExceptionGUID: 201cecc1-a16d-45d9-a7b5-5d2f501f90c1
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
InnerException: Value cannot be null. Parameter name: connectionString
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Value cannot be null. Parameter name: connectionString ---> System.ArgumentNullException: Value cannot be null. Parameter name: connectionString at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Modules.Links.SqlDataProvider.GetLinks(Int32 ModuleId) at DotNetNuke.Modules.Links.LinkController.GetLinks(Int32 ModuleId) at DotNetNuke.Modules.Links.Links.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---
StackTrace:
Source:
Server Name: MYSERVER

Anyone can help me resolve this? I can login to the database and I have made sure that I have set the connection string in web.config's <connectionstring> and <appsettings>.

Hello:

On most of these I've seen like this there is an almost 1/2 install that occurred, in some cases you will see a dropdown list of some of the core modules, for example.  Is anything like this the case?

This will usually result from not having the NTFS permissions for your site setup such that the aspnet alias account has the ability to create your portal and finish the install.  I would retry your installation from scratch and take care to see that the NTFS permissions are setup properly following the DNN Installation guide.

Although I don't believe it is a connection string issue, if you are still having trouble post your string's format so this can be ruled out as well.

Keep me posted - no pun intended..............

John