I was playing around with standard skins, attempting to shrink the width of my page.

When installing DNN-Blue I got this error message. Now I can't get into "Admin-skin" or "host-skin" even after closing browser and re-login??

An error has occurred.

DotNetNuke.Services.Exceptions.PageLoadException: Value cannot be null. Parameter name: type ---> System.ArgumentNullException: Value cannot be null. Parameter name: type at System.Activator.CreateInstance(Type type, Boolean nonPublic) at DotNetNuke.Framework.Reflection.CreateObject(String TypeName, String CacheKey, Boolean UseCache) at DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) at DotNetNuke.Modules.NavigationProvider.NavigationProvider.Instance(String FriendlyName) at DotNetNuke.UI.Skins.NavObjectBase.InitializeNavControl(Control objParent, String strDefaultProvider) at DotNetNuke.UI.Skins.Controls.TreeViewMenu.OnInit(EventArgs e) at System.Web.UI.Control.InitRecursive(Control namingContainer) at System.Web.UI.Control.InitRecursive(Control namingContainer) at System.Web.UI.Control.InitRecursive(Control namingContainer) at System.Web.UI.Control.AddedControl(Control control, Int32 index) at System.Web.UI.ControlCollection.Add(Control child) at DotNetNuke.Framework.DefaultPage.Page_Init(Object sender, EventArgs e) at System.Web.UI.Control.OnInit(EventArgs e) at System.Web.UI.Page.OnInit(EventArgs e) at DotNetNuke.Framework.PageBase.OnInit(EventArgs e) at System.Web.UI.Control.InitRecursive(Control namingContainer) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

 

Hello,

This is because you are using the DNN blue vertical skin and currently this will cause errors.  The problem is that in DNN 4.4 they forgot to include some .dll files,  in this case the dll for the TreeView menu.

This blog  post lists all of the DLL files that are missing: http://www.mitchelsellers.com/Blogs...fault.aspx

Basically, you need to download DNN 4.3.7, go to the bin folder and copy the following files:

DotNetNuke.DNNTreeNavigationProvider.dll
DotNetNuke.ASP2MenuNavigationProvider.dll
DotNetNuke.Caching.BroadcastPollingCachingProvider.dll
DotNetNuke.Caching.BroadcastPollingCachingProvider.SQLDataProvider.dll
DotNetNuke.DNNDropDownNavigationProvider.dll
DotNetNuke.DNNMenuNavigationProvider.dll

(DotNetNuke.DNNTreeNavigationProvider.dll) is the file you need to fix your current error.

Copy these files into the bin folder of your DNN 4.4 installation.

Hopefully in the DNN 4.5 these files will be included with the installation,

Thanks,