Cannot define class or member that utilizes dynamic because the compiler required type

Question

I\'m using Facebook SDK C# Library in Asp.Net 3.5 Application. When I\'m trying to compile the code below give me the errors. As I know dynamic type using in 4.0 framework. So i

Answer 1

My project was already > 4.0. It was 4.5.2, in fact. I was experiencing this error. What I did to fix it:

1. I changed the project to 4.5.1.

2. I changed it back to 4.5.2.

3. Problem solved!

Thanks - hope this helps someone out there.

PS - not using facebook SDK, but this could help.