Visualforce Remoting Exception: Remoting request invalid for your session.
But interesting part is I used the same login to operate on the same VF page and on the same record but got no issue at all. And we are both using Chrome.
I googled this error message and all the existing information it is due to CSRF protection. But if that is the case, I guess it shouldn't behave differently on two machines? Is there anything to do with the browser settings etc. ?