Clicking the TurboLaw Edit Document button in an Excel-based document (such as a Rule 401 Short Form, a Child Support Guidelines Worksheet, or a HUD-1 form), an error message will appear which says "400." No other information is displayed.
This behavior occurs when multiple "sheets" (tabs) of an Excel-based document are selected. Selected sheets are highlighted white (as opposed to the normal gray). In Excel, this is known as "grouping." To un-group the tabs, right-click on the current tab and choose Ungroup Sheets. You will now be able to click the un-protect button without any errors.