DeskTop Author is an electronic publishing software that allows you to quickly, easily and professionally create and/or sell page turning electronic publications such as eBooks, eCatalogs, eBrochures, ePresentations, photo albums and much more. Create DNL eBooks for Windows and Mac (Intel).
The "ply is undefined" message will occur whenever the ActiveX control is
not installed. On the computer with the fault, it is likely that their IE
settings prevent installation or scripting of ActiveX controls.
