Install Platform via Source and alll the additional providers fail to load

Get latest Platform 7.3.3 build source package
Unpack in a named folder
Open the folder and open the Website folder
Rename Development or Release config files to web.config
Set up DNN_Platform as localhost in IIS and point it to the /website folder within the project
Open VS 2010 or 2012
Open DNN_Platform project
Set "Solution Configuration" to "Release"
Build the solution
Now load http://localhost/dnn_platform in a browser
Run the site installation
Now check log.resources file after install is complete

Actual Result:
In the log.resources file these errors appear:

2014-08-18 11:35:13,810 [DNN-PC03][Thread:26][ERROR] DotNetNuke.ComponentModel.ProviderInstaller - System.Configuration.ConfigurationErrorsException: Could not load provider DotNetNuke.NavigationControl.DNNMenuNavigationProvider, DotNetNuke.DNNMenuNavigationProvider
2014-08-18 11:35:13,870 [DNN-PC03][Thread:26][ERROR] DotNetNuke.ComponentModel.ProviderInstaller - System.Configuration.ConfigurationErrorsException: Could not load provider DotNetNuke.NavigationControl.SolpartMenuNavigationProvider, DotNetNuke.SolpartMenuNavigationProvider
2014-08-18 11:35:13,874 [DNN-PC03][Thread:26][ERROR] DotNetNuke.ComponentModel.ProviderInstaller - System.Configuration.ConfigurationErrorsException: Could not load provider DotNetNuke.NavigationControl.DNNDropDownNavigationProvider, DotNetNuke.DNNDropDownNavigationProvider
2014-08-18 11:35:13,876 [DNN-PC03][Thread:26][ERROR] DotNetNuke.ComponentModel.ProviderInstaller - System.Configuration.ConfigurationErrorsException: Could not load provider DotNetNuke.NavigationControl.DNNTreeNavigationProvider, DotNetNuke.DNNTreeNavigationProvider
2014-08-18 11:35:13,879 [DNN-PC03][Thread:26][ERROR] DotNetNuke.ComponentModel.ProviderInstaller - System.Configuration.ConfigurationErrorsException: Could not load provider DotNetNuke.NavigationControl.ASP2MenuNavigationProvider, DotNetNuke.ASP2MenuNavigationProvider
2014-08-18 11:35:13,882 [DNN-PC03][Thread:26][ERROR] DotNetNuke.ComponentModel.ProviderInstaller - System.Configuration.ConfigurationErrorsException: Could not load provider DotNetNuke.Providers.FiftyOneClientCapabilityProvider.FiftyOneClientCapabilityProvider, DotNetNuke.Providers.FiftyOneClientCapabilityProvider

Expected Result:
All the providers load during instalaltion

Note:
This may be a bogus error condition as the same providers shown in the error messages are all listed under Host > Extension > Additional Extensions