I am getting the following error on the client's machine.  Please help!

Method not found: 'Void MicroFour.StrataFrame.UI.ListPopulationSettings.set_DropDownFormatString(System.String)'.

Exception (MissingMethodException): Source="Project Tracker"; Target=null; Tag=null;

Message = "Method not found: 'Void MicroFour.StrataFrame.UI.ListPopulationSettings.set_DropDownFormatString(System.String)'."

Environment: ThreadIdentity="" DateTime=["2007-10-04 10:12:34.734"] ThreadName=null WindowsIdentity="STRUSS\JPagley" ThreadId="1" DomainName="projecttracker.exe" OSVersion=["Microsoft Windows NT 5.0.2195 Service Pack 4"] MachineName="INVENTORY"

UserName="JPagley"

Remaining Stack Trace - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

at Project_Tracker.JobForm.InitializeComponent()

at Project_Tracker.JobForm..ctor()

at Project_Tracker.MDIMainForm.tsmiDataEntry_Click(Object sender, EventArgs e)

at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)

at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)

at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)

at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)

at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)

at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)

at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)

at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)

at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

at System.Windows.Forms.ToolStrip.WndProc(Message& m)

at System.Windows.Forms.ToolStripDropDown.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)