I\'ve been looking all over for the solution but I cannot find anything that works.
I am trying to get a bunch of data from the database and then via AJAX autocomplete input
If you are using a newer version (over 1.3.x) you should learn more about the function parseJSON! I experienced the same problem. Use an old version or change your code
success=function(data){
//something like this
jQuery.parseJSON(data)
}