Progress Bar Never Stops
You’re seeing the green “Loading… Please Wait” progress bar continuosly running – it never stops and comes back with any data.
If this is a new setup, then it’s possible that your web host does not have a library called “JSON” enabled. Just ask them to enable it for your server. It’s rather simple to do, and we’ve never seen a host that won’t do this for their customers.
If it’s an old setup, and it was working previously, then your host made some changes that caused the library to stop working. So you still need their help in resolving the issue.
Error Message: “There was an error returning data'”.
One possibility is that your database or web site is temporarily down, slow, or plain not responding for some reason. So DAP cannot connect to your database, and comes back with this error.
Or it could also be the “Progress Bar Never Stops” issue from above.