We are unable to open Site settings page After Upgrading my application DNN version 6.00.02 to 6.02.05.
Getting error like "A critical error has occurred. Object reference not set to an instance of an object."
The error details in Event viewer as follows,
AssemblyVersion: 6.2.5
PortalID: 0
PortalName:
UserID:
UserName:
ActiveTabID: 41
ActiveTabName: Site Settings
RawURL: /Admin/SiteSettings.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://216.115.71.216:90/Default.aspx?tabid=41&error=Object+reference+not+set+to+an+instance+of+an+object.&content=0
UserAgent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: b96cb7b0-d465-4c35-9f32-fce717eb3d24
InnerException: Unhandled Error Adding Module to ContentPane
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Services.FileSystem.FolderManager.GetFolders
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Unhandled Error Adding Module to ContentPane ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Services.FileSystem.FolderManager.GetFolders(Int32 portalID, String permissions, Int32 userID) at DotNetNuke.Web.UI.WebControls.DnnFilePicker.LoadFolders() at DotNetNuke.Web.UI.WebControls.DnnFilePicker.AddFolderArea() at DotNetNuke.Web.UI.WebControls.DnnFilePicker.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at DotNetNuke.Web.UI.WebControls.DnnFilePicker.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.UI.Modules.ModuleHost.LoadAjaxPanel() at DotNetNuke.UI.Modules.ModuleHost.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at DotNetNuke.UI.Modules.ModuleHost.get_ModuleControl() at DotNetNuke.UI.Containers.Container.get_ModuleControl() at DotNetNuke.UI.Containers.Container.ProcessModule() at DotNetNuke.UI.Skins.Pane.InjectModule(ModuleInfo module) --- End of inner exception stack trace --- at DotNetNuke.UI.Skins.Pane.InjectModule(ModuleInfo module) at DotNetNuke.UI.Skins.Skin.InjectModule(Pane pane, ModuleInfo module)
Source:
Server Name: