Nintex Forms: Cannot open designer "An error occurred during an ajax call."
Recently I have installed the Nintex Workflow Forms and configured it. I have activated the web application feature and site collection features and all, however when I try to customize a list forms using Nintex designer I started getting error message that says "An error occurred during an ajax call." When I did IISReset, it seemed to have fixed it. hope this small piece of information will save your time!