# Designer is Not Loading

## Environment

| Product Version | Product         | Author                                                                          |
| --------------- | --------------- | ------------------------------------------------------------------------------- |
| 2022.2.622      | UI for WinForms | [Desislava Yordanova](https://www.telerik.com/blogs/author/desislava-yordanova) |

## Description

After [upgrading](https://www.telerik.com/products/winforms/documentation/knowledge-base/how-to-upgrade-a-project) from version **2022.2.622** to any newer version, the form's designer may not be opened even though the correct assemblies are referred in the project and the license file is deleted.

![designer-not-loading 001](https://www.telerik.com/products/winforms/documentation/assets/16928bcd87915a0f0f08fe46afdde41e/designer-not-loading001.png)

If you have a **RadRibbonBar** on the form, this is a potential reason for the broken design time experience.

## Solution

There was an [issue](https://feedback.telerik.com/winforms/1570989-radribbonbar-invalid-resx-file-could-not-load-type-system-delegateserializationholder-after-adding-a-group-at-design-time) related to RadRibbonBar which used to serialize the **CreateAdapterMethod** property in the resource file:

![designer-not-loading 002](https://www.telerik.com/products/winforms/documentation/assets/722dab53d2e2abdec0230fbb7a846c57/designer-not-loading002.png)

After decoding the serialized base64 content, here comes the assembly version displayed in the failed designer:

![designer-not-loading 003](https://www.telerik.com/products/winforms/documentation/assets/d24ec1df2cadc14473976bb50a951409/designer-not-loading003.png)

The issue has already been addressed and a fix was released in **R3 2022**. The **CreateAdapterMethod** property is not serialized any more. However, all broken resource files need to be manually handled and delete the serialized CreateAdapterMethod property from the .resx.

## See Also

* [How to Upgrade a Telerik UI for WinForms Project](https://www.telerik.com/products/winforms/documentation/knowledge-base/how-to-upgrade-a-project)
* [Updating Assemblies in a Project](https://www.telerik.com/products/winforms/documentation/installation-and-upgrades/updating-assemblies-in-a-project)
* [Install using NuGet Packages](https://www.telerik.com/products/winforms/documentation/installation-and-upgrades/install-using-nuget)
* [Upgrade Wizard](https://www.telerik.com/products/winforms/documentation/visual-studio-integration/visual-studio-extensions/upgrade-project)
* [Download New Version](https://www.telerik.com/products/winforms/documentation/visual-studio-integration/visual-studio-extensions/latest-version-acquirer)