If you've ever used ActiveX controls on your Excel Spreadsheet you may have run into the problem of the control suddenly no longer working. When you open the workbook there's nothing but a big red X in the place of where your control used to be. The tree-view (treeview) control comes to mind, which may have stopped working after applying the fix in KB article 982308 (http://support.microsoft.com/kb/982308). Fret not, for there is a hotfix available to remedy this behavior. It is here - http://support.microsoft.com/kb/2483214. This will restore the treeview control to full working order.