I upgraded my solution from MVC 3 to MVC 4 due to required code (DayPilot MVC - Calendar Controls). Everything works on my laptop, where I developed the project, now I need to push this to UAT, and on the server, I get this following error:
I tried to install the MVC version via nuget, and update everything, and still nothing. Any ideas where to look or what to change, will be highly appreciated.