Can you post the registrations that are on top of the used container?

I am getting this same error when I perform a Test upgrade locally.

It seems as though any module container that uses a Title will break the entire page causing a 500 error.

AbsoluteURL:/Default.aspx
DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke
ExceptionGUID:3702b74a-9c21-436d-9e60-3011229b05eb
AssemblyVersion:10.1.2
PortalId:1
UserId:-1
TabId:54
RawUrl:/Default.aspx?tabid=54&error=An+unexpected+error+has+occurred&content=0
Referrer:https://dnnhost2test.local/About-Us
UserAgent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36
ExceptionHash:GFbP3h6hxc0I0yURxtHhLTaYhx4=
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.UI.Containers.Title.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.d__249.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Util.WithinCancellableCallbackTaskAwaitable.WithinCancellableCallbackTaskAwaiter.GetResult()
at System.Web.UI.Page.d__523.MoveNext()
Source:
FileName:
FileLineNumber:0
FileColumnNumber:0
Method:
Server Name: SERVERNAME

In the affected module's settings, so long as I set "Module Container" to "" or to something like "Xcillion - NoTitle" then everything appears to work normally. If I select any module container that has a title, it gives the above error.

For others with this issue who are looking for a workaround. You could remove all the module containers with titles prior to updating, or if you've already updated and you have at least one unaffected page (like your login page maybe) and you can log in and Navigate to Pages > "Page Name" > Advanced, and update the module settings on any given page here and remove the module containers with titles.

I have a rather large website where removing the titles from every module isn't a viable option.

This is the only other person I see discussing this issue, so I haven't been able to resolve it for myself.

That's weird, I just tested the Xcillion H2 Title container on DNN 10.1.2 and it works as expected.
You don't have Apollo Localization on this site do you, or any other extension that manipulates the content?
Can you check if the register looks like this in the container you use?
https://github.com/dnnsof...ainers/title.ascx#L2

Are there specific types modules with which you have this issue?

Can you try if this also happens on a newly create page with a new module?

Posted By Shivam S on 10/13/2025 12:06 PM

• If this is a known issue with version 10.1.1?

No, it's not..
Are these Multi language sites?