Report Control - AccessViolationException

I have an issue and just need ideas on where to look. I have a report control that off of it the user adds information. When completed, I have the control "refresh" itself with the following basic lines:

This is the same routine used throughout; however, in this one location there is a persistent error:

System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)

at XtremeReportControl._DReportControl.RemoveRowEx(ReportRow Row)

at AxXtremeReportControl.AxReportControl.RemoveRowEx(ReportRow row)

at TrakkerLIB.reportItems.RemoveAllRows() in C:\Development\TrakkerSoftware\TrakkerLIB\Controls\reportItems.cs:line 91

at TrakkerLIB.reportItems.RemoveAllItems() in C:\Development\TrakkerSoftware\TrakkerLIB\Controls\reportItems.cs:line 102

at TrakkerControls.reportGridItems.RefreshAdminItemStages() in C:\Development\TrakkerSoftware\TrakkerControls\TrakkerControls\Grid Report Items\reportGridItems_ItemStages.cs:line 87

at TrakkerLIB.reportItems.RefreshGrid() in C:\Development\TrakkerSoftware\TrakkerLIB\Controls\reportItems.cs:line 84

at TrakkerControls.reportGridItems.addNewItemStage(Object sender, EventArgs e) in C:\Development\TrakkerSoftware\TrakkerControls\TrakkerControls\Grid Report Items\reportGridItems_ItemStages.cs:line 118

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)

So the question is, what should I be looking for as the potential cause?

Thanks,

Steve