This error may occur if you try to generate a diary that uses holidays tokens and the Generated Holidays table is radically different from the shared Holidays Rules table.
This may occur when installing a new Q++ Workstation, but should not occur again after you re-generate holidays once. To re-generate holidays, go to the DATA menu and then to the HOLIDAYS TOOLS sub-menu and then to the GENERATE HOLIDAYS menu item.
If this message occurs again, contact technical support.