Could not load the Web.config configuration file…the given key was not present…

Posted on by Iain 'Cutty' Carlin

Turns out I had https://… instead of http://…. as the URL property of the SharePoint project.

Found the answer at:

http://www.thorntontechnical.com/tech/sharepoint/could-not-load-web-config-file-the-given-key-was-not-present-in-the-dictionary