Hello Community,

When I try to enter the Admin > Site Settings page I get an NullPointerException. The errorlog shows the following exception details:

AssemblyVersion: 7.0.5
PortalID: 0
PortalName: $NAME$
UserID: $ADMINUSERID$
UserName: $ADMINISTRATORNAME$
ActiveTabID: 63
ActiveTabName: Site Settings
RawURL: /Admin/SiteSettings.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: URL
UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke
ExceptionGUID: af3cc9d6-9e1b-47b9-a80c-09b7cf9e0352
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Web.UI.WebControls.DnnFilePickerUploader.LoadFiles
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Web.UI.WebControls.DnnFilePickerUploader.LoadFiles() at DotNetNuke.Web.UI.WebControls.DnnFilePickerUploader.LoadFolders() at DotNetNuke.Web.UI.WebControls.DnnFilePickerUploader.Page_Load(Object sender, EventArgs e) at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Source:
Server Name: $MYWEBSERVERNAME$

Can anyone please suggest a fix for that. I already tried to reset the folder permissions via Admin > File Manager but that did not change anything.

Regards,
Nils