'Visual Studio update - 'could not load type' error editing tt file

I updated to VS2019 v16.10 and since then, I get an error every time I type into my tt file (reversePoco).

From reading what little I can find, it may be related to an extension but I see no way to identify which. I didn't even have LanguageService installed, so I installed it but no change.

Has anyone else encountered this and found a solution?

Thanks.

visual-studio

Solution 1:^[1]

I had the same issue. I solved on v. 16.11.13 disabling the extension named "Devart T4 Editor", which is apparently shipped with Visual Studio (Menu Extensions > Manage Extensions > Installed > Devart T4 Editor > Disable).

You will loss the syntax highlighting on the .TT files, but you can install other working extension like T4Language (I tried this one) or t4editor.

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'Visual Studio update - 'could not load type' error editing tt file

Solution 1:[1]

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Solution 1:^[1]