I am using json2 (http://www.JSON.org/json2.js – 2010-03-20) and jQuery 1.4.2.

I have inline editing allowed. When a user edits the grid and submits an empty field, i do server side validation, and if its invalid (I.e: an empty field), I return a json object with a message. This works fine in IE 8 and Firefox 3.6.6 on jqGird 3.6.4.

I upgraded from 3.6.4, to 3.6.5 and found that this DOES NOT work in IE now, but does in Firefox, instead json2.js throws an error on: “return this.valueOf();” complaining that “Object doesn't support this property or method”.

I then upgraded to 3.7, and the problem still occurs. The only change on my side of the code is upgrading the grid, jquery/json2 and all other code has not changed in 2 months.

Has the way in which an AJAX call parses the data returned changed?

Cheers.