Error after build - Web Essentials 2012
asp.net-mvc-4, visual-studio, web-essentials
Solution
This is an older question, but a top hit on Google. So here is my answer. I have found this occurs due to some version conflict or early bug in Visual Studio and the Web Essential 2012 Extension. With an RTM install of Visual Studio 2012 and the latest Web Essentials (version 3.2 at the time of this post) I can reproduce this error.
Installing the latest update to Visual Studio has fixed the problem for me. Update
To confirm what version of Visual Studio you are running, goto `Help -> About`
Update 3 or greater should fix the issue
Microsoft Visual Studio Ultimate 2012 Version 11.0.60610.01 Update 3
Here is a link to the Visual Studio update on the Microsoft site
Problem
I got this error very frequent for my asp.net MVC4 applications. The project does build OK but it shows a message in the output. ``` 18/04/2013 3:17:57 p.m.: Object reference not set to an instance of an object. at MadsKristensen.EditorExtensions.ProjectHelpers.GetRootFolder() at MadsKristensen.EditorExtensions.ProjectHelpers.GetRootFolder() ``` I am using VS2012 Update 1. Web Essentials 2012 version 2.6. It is not major but annoy. Please help.