Hi Kevin,
I just updated my solution to MM v4.0.30319 with Infragistics WInForms 2010.3. (I use infragistics winforms 2010.3).
I am running Visual Studio 2010 on Windows 7. All my solution controls are based on MM controls class of Infragistics win controls.
When I run my app I am experiencing a strange behavior of SOME controls binding.
All my regular textboxes are binding to a Business Object Field via the standard BindingSource and BindingSourceMember property where you provide a nice interface with to the BO, however, some of them are not showing the data when the form gets control (called from a main mdi form). BUT, when I setup a breakpoint on the form's constructor and then just continue, all works fine and I can browse all records and see all content on the fields.
I think it is only reflect textboxes because I have a date field which refreshes fine in any case.
I appreciate if you can direct me to a solution, because it is almost impossible to debug it because the debug is fixing the issue...

See attached screen shots.

Regards,