Bug #52040 No clue why I got this.. i think this will help thus doing it
Submitted: 14 Mar 2010 1:10 Modified: 16 Apr 2010 12:00
Reporter: Anil Karamchandani Email Updates:
Status: No Feedback Impact on me:
None 
Category:MySQL Workbench Severity:S3 (Non-critical)
Version: OS:Any
Assigned to: CPU Architecture:Any

[14 Mar 2010 1:10] Anil Karamchandani 
Description:
Exception = System.Runtime.InteropServices.SEHException
Message = External component has thrown an exception.
FullText = System.Runtime.InteropServices.SEHException: External component has thrown an exception.
   at bec.FKConstraintColumnsListBE.get_column_is_fk(FKConstraintColumnsListBE* , NodeId* )
   at MySQL.Grt.Db.FKConstraintColumnsListBE.get_column_is_fk(NodeId node)
   at MySQL.GUI.Workbench.Plugins.DbMysqlTableFkColumnListModel.columnEnabledFkNodeControl_CheckStateChanged(Object sender, TreePathEventArgs e)
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at Aga.Controls.Tree.NodeControls.NodeCheckBox.OnCheckStateChanged(TreePathEventArgs args)
   at Aga.Controls.Tree.NodeControls.NodeCheckBox.OnCheckStateChanged(TreeNodeAdv node)
   at Aga.Controls.Tree.NodeControls.NodeCheckBox.SetCheckState(TreeNodeAdv node, CheckState value)
   at Aga.Controls.Tree.NodeControls.NodeCheckBox.MouseDown(TreeNodeAdvMouseEventArgs args)
   at Aga.Controls.Tree.TreeViewAdv.OnMouseDown(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseDown(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

How to repeat:
no clue
[16 Mar 2010 12:00] MySQL Verification Team 
Thank you for the bug report. Are you tried to Manage Import/Export in Server Administration?. Thanks in advance.
[16 Apr 2010 23:00] Bugs System 
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".