I have a user control that has a child user control. If I drag this
onto the page, it appears and functions normally.

If I attempt to add the user control to a page dynamically, I get the
static content, but the child user control does not appear to render.

Any ideas on how I can fix this?

I'm dynamically creating the control using:

ReportControl_ascx rc =
(ReportControl_ascx)Page.LoadControl("UserControls/ReportControl.ascx");
rc.ReportInfo = e.SelectedReport;

Control contentCtrl =
this.Master.FindControl("ContentPlaceHolderMain");
contentCtrl.Controls.Add(rc);