Hello,

Can someone please help me with an advice.  I am completely new to DNN.  I managed to install version 7.4 and I am able to log into DNN.  One of the first things a new user would try to do is add a new page and try playing with it.  Well, I can't do that because DNN returns an error: "A critical error has occurred. Please check the Event Viewer for further details."  Checking details in the logs shows the following:

AbsoluteURL:/Default.aspx

DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke

ExceptionGUID:59ee9ccd-cc7f-4785-b72e-e6c5b1b414ef

AssemblyVersion:7.4.0

PortalId:1

UserId:1

TabId:74

RawUrl:/Admin/Log-Viewer/ctl/Tab/activeTab/settingTab?popUp=true

Referrer:http://dnn.coretech-me.com/Admin/Log-Viewer

UserAgent:Mozilla/5.0 (Windows NT 6.1; WOW64; rv:37.0) Gecko/20100101 Firefox/37.0

ExceptionHash:TIjKB2tBq8zO5+Q81B4PpA==

Message:Object reference not set to an instance of an object.

StackTrace:

InnerMessage:Object reference not set to an instance of an object.

InnerStackTrace:

   at DotNetNuke.Security.Permissions.Controls.TabPermissionsGrid.c__DisplayClass1.b__0(RoleInfo r)
   at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
   at DotNetNuke.Security.Permissions.Controls.TabPermissionsGrid.GetEnabled(PermissionInfo objPerm, RoleInfo role, Int32 column)
   at DotNetNuke.Security.Permissions.Controls.PermissionsGrid.BindRolesGrid()
   at DotNetNuke.Security.Permissions.Controls.PermissionsGrid.OnPreRender(EventArgs e)
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Source:

FileName:

FileLineNumber:0

FileColumnNumber:0

Method:

Server Name: DNN
 

I don't seem to have a problem with DB connectivity.  My DB user is mapped to the DB login which is validated by the database as the AppPool Identity and the user has the db_owner role.  Anyway, I was able to install DNN with these DB parameters and all tables were created.

 What may be the culprit?

Thanks a lot to everyone who can share views.

 

Sebastian, thank you for replying.

I am not clear yet about DNN concepts, so I am not sure.  Can you tell me where I can check?

In site management's Home Directory I see Portals/1

I am not sure, what Chris is heading at, because file System directories are not relevant for this issue.
I suggest using Host > Website Management and check for a site with ID 0 (HomeDirectory = /Portals/0).
If ths is missing, DNN 7.4.0 is failing. Easiest solution would be waiting for DNN 7.4.1, where it will be fixed.
Users of my TurboSQL scripts (https://dnnscript.codeplex.com) will not be affected, because I included a fix.
if you Need it separated, please let me know.

---

Cheers from Germany,
Sebastian Leupold

   

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