Wisej-3 In visual studio 2022 error: "Value cannot be null, Parameter name: instance"

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I’ve been using VS 2022/Wisej and all has been well.

Now, I am receiving the error “Value cannot be null, Parameter name: instance” on ALL forms.

I’ve made no changes to any of the forms.  VS 2022 made an update and I have reverted to the old one and still get this error on all forms. (I did reboot)

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Thank you Julie, that worked!! 🙂

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This can happen if nuget packages and vsix versions don’t match or the vsix is not properly installed.
1. Install the most recent VSIX from https://wisej.com/builds/

2. Right click on the solution -> Manage Nuget Packages Check that the nuget package you are using is the most recent one (currently 3.5.17)
3. Do a clean and rebuild of the project. Manually delete the obj and bin folders.

4. Restart Visual Studio

5. Restart your computer

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