I&#039;ve created a report using DataSet and I change its dataset at runtime and its working fine. <BR><BR>But I inserted a subreport in this report it. I get an error. Query Engine Error: C:docdotnetckhokhar emp12341234.rpt<BR><BR>Query Engine Error usually comes when the dataset on which report is build and and dataset you are giving at runtime is different. But I have made sure that the two datasets are same. <BR><BR>do some one know what might be the issue. <BR><BR>