I have the Pro Suite v1.6 and am trying to dynamically load kids. I have everything working with one issue. Any primary row that I click on shows the minus sign but no child rows. If I then click on the same minus sign it turns into a plus. If I then click on the same plus one more time, it turns into a minus with the correct child rows showing. Is the call for the children timing out or something?
It is a known issue , for situation when smart-rendering and dynamic loading used in same time.
Problem already fixed in latest build ( Suite 2.0 ), if you need update for dhtmlxgrid 1.6, to resolve problem - please contact us directly at support@dhtmlx.com