Could not load file or assembly 'Newtonsoft.Json'

Question

I was trying to launch my web application to Smarterasp.net server, but the following error pops up.

"Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.

"

Hope there's someone help.

Very much appreciated.