Issue with version 4.1.0.302

Using version 4.1.0.302.
When using TIWCGJQFrame
The following no longer works in ajax when called from a button (It does work with a full post back.)
IWFrameRegion.JQDialogOptions.Close();
Can you please fix this?
When using TIWCGJQFrame
The following no longer works in ajax when called from a button (It does work with a full post back.)
IWFrameRegion.JQDialogOptions.Close();
Can you please fix this?