On the 7.4 download page you can see the list of breaking changes: https://our.umbraco.org/contribute/releases/740

I've tried some 7.3 upgrades with NuGet and so far everything still works.

Jeroen

Hi all!

After updating to version 7.4RC1 I got the error:

 [MissingMethodException: Method not found: "Boolean Umbraco.ModelsBuilder.Configuration.Config.get_EnableLiveModels()".]
   Umbraco.ModelsBuilder.AspNet.LiveModelsProvider.get_IsEnabled() in X:\Projects\Umbraco\ModelsBuilder\Zbu.ModelsBuilder\Umbraco.ModelsBuilder.AspNet\LiveModelsProvider.cs:45
   Umbraco.ModelsBuilder.AspNet.LiveModelsProviderModule.Install() in X:\Projects\Umbraco\ModelsBuilder\Zbu.ModelsBuilder\Umbraco.ModelsBuilder.AspNet\LiveModelsProvider.cs:156

Does anyone know how I can resolve this?

I'm facing the same "Method not found"-error. Any news about it?

Upgrading 7.3.4. to 7.4 Final After a couple of hours of headscratching i have a couple of heads-ups for those in trouble :)

· Read the upgrade guide https://our.umbraco.org/contribute/releases/740/

· Compare /config/applications.config if you have custom sections like SEOChecker

· Compare grid.editors.config.js if you have custom grid editors.

· If youre using LeBlender and have trouble in the backend, Download umbraco.dll from here http://issues.umbraco.org/issue/U4-7950

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