Report Designer no longer loading in VS 2022

[almostEric]

I am using VIsual Studio 2022 17.13.5 (latest as of March 27,2025)
At some point - not sure if due to a VS update or a Telerik Reporting update, the Report Designer no longer loads with in Visual Studio
(the stand alone designer still works ok)

But now, if I double click on one of my report definition classes, I get an error "Value can not be null, parameter name: instance"

 

Here is the Call Stack:

at System.ComponentModel.TypeDescriptor.AddAttributes(Object instance, Attribute[] attributes) at Microsoft.VisualStudio.Design.VSDesignSurface.CreateDesigner(IComponent component, Boolean rootDesigner) at System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent component, String name, IContainer containerToAddTo) at System.ComponentModel.Design.DesignerHost.PerformAdd(IComponent component, String name) at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType, String name) at System.ComponentModel.Design.Serialization.DesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer) at System.ComponentModel.Design.Serialization.DesignerSerializationManager.System.ComponentModel.Design.Serialization.IDesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer) at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration) at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)

 

[Ivet]

Hi Eric,

Thank you for reaching out.

You can find information on how to resolve this issue in the following article - Value cannot be null. Parameter name instance. when trying to open the Report Designer in Visual Studio 2017 or newer - Telerik Reporting.

Note that the version of the Telerik Reporting assemblies referenced in your projects should be the same as the last installation of Telerik Reporting as this will be the version of the Visual Studio Report Designer.

I hope the above information will be useful. Let me know if you have other questions.

Regards,
Ivet
Progress Telerik