Hi,
 
Just after rendering "prmNames" property is added extra "n" witch prevents proper configuration of gridComplete event.
 
Solution: on line 304 in GridControl.cs:
 
sb.AppendFormat("prmNames: {{id: \"{0}\"}},\rn", getKeyColumnName());
 
change to:
 
sb.AppendFormat("prmNames: {{id: \"{0}\"}},\r\n", getKeyColumnName());