I had the same issue you just need to forget about drag and drop and set it in code. Here is code out of my contacts user control that I use to pop up a maint form for additional editing. Anyways hope it helps

P 

Private WithEvents ChildFormDialog As MicroFour.StrataFrame.UI.Windows.Forms.ChildFormDialog

Private Sub ContactUserControl_ParentFormLoading() Handles Me.ParentFormLoading

When you drop a ChildFormDialog on a SF user control you receive an error message 'Invalid FrameWork Container, the object that the ChildFormDialog has been dropped on is not a subclass of MicroFour.StrataFrame.UI.Windows.Forms.BaseForm'. 

Tim

Me.userControl1.childFormDialog1.ShowDialog()

When you drop it on the UserControl, you should be able to set the translations between the user control and the child form dialog.

I have a 'Contact' user control that contains a Grid, Contact Business Object and Business Binding Source. I drop the same Contact BO on my form along with my Contact User control and set the BO Translation property.  I populate the Contact BO on my form and set the Usercontrol's bbs.businessOject =  my forms Contact BO.  THis works fine thanks to Trent.

Now that I have a list of contacts I need the ability to edit contact infomation, without using a child dialog control, so I created a child form to edit contact information.  Now how do I translate the BO from my user control to my dialog form and keep the business objects in sync. I tried setting up a manual business object translation between the two but couldn't figure out how to populate the BO on the dialog form.

Thanks

Tim