I've changed the BaseForm.vb as Public Class BaseForm         Inherits MyBaseForm         Implements MicroFour.StrataFrame.UI.Windows.Forms.IContainerControl MyBaseForm is inhereted from Devexpress XtraForm. I 've got error message below in design time when SimpleButton (Devexpress wrapped) object were dropped on my form. My form is based on StandartForm which is based on my changed BaseForm. With Textedit Object there is no similar error. "The object that the business object has been dropped on must be implement MicroFour.strataFrame.UI.Windows.Forms.IcontainerControl" IContainerControl Interface is implemented on baseform class but is not root (base class) now, Do I implement this interface on my base class ? I've tried to set Business Object property of text control, I couldn't see BusinessObject in the list.

I've gone some steps further  to make ready for our project ;

- Move the forms into a class library project (*.dll)

- Run sample form by using dll (above)

It works as your sample (Shows the form). I've added a BusinessObject to test project and got the error while loading the designer ;

"Could not load type 'MicroFour.StrataFrame.Business.BaseBusinessObjectAttribute' from assembly 'MicroFour StrataFrame Base, Version=1.6.0.0, Culture=neutral, PublicKeyToken=99fe9917f71608a7'"

Business Object Mapper also fails when configuring the project (Choose project);

BusinessLayerException
  An error occurred while saving an the data to the server.
TypeLoadException
  Could not load type 'MicroFour.StrataFrame.Security.DataAuditAction' from assembly 'MicroFour StrataFrame Base, Version=1.6.0.0, Culture=neutral, PublicKeyToken=99fe9917f71608a7'.

Yeah, that could be.  Add this (MicroFour StrataFrame Base) assembly to your GAC and c:\program files\common files\microfour\strataframe as well...I will be doing a full rebuild of the 1.6.5 beta late this week or this weekend which will include these updated assemblies, but go ahead and add this one manually for the time being.