When using the search option in navgrid and there are select fields in the grid an error is thrown on line 6041

postData var is set e.g. postData = options.postData || ajaxso.postData but postData is not set by dataURL at this time.

I changed the line to (and added a line)

     var rowid = options.name ? String(options.id).substring(0, String(options.id).length - String(options.name).length - 1) : String(options.id);
     try{var postData = options.postData || ajaxso.postData;}catch (m){}

And now it is working fine! The select is populated by tje dataURL ajax request!