Uninstall all old SynerGIS ArcMap Extensions (WebOffice plot author, WebOffice ePaper author, WebOffice extract server author). With the ArcGIS Server 10 extensions all extensions are installed/uninstalled with one setup. You always have to uninstall all components to update one, but of course you can update all at the same time! If you have installed any GeoOffice components (e.g. GeoOffice symbologies) you have to update them, too! All WebOffice extension and GeoOffice components that are installed have to be installed in the same version!
Note: All ArcGIS instances must be closed before uninstalling.

Remove WebOffice plot author