I have had this issue for quite a while and cant find the solution, Whenwe attempt to attach a document to a winfax the cover page appears but no document is attached. And ideas would be helpful.
If that does not help, you may have a problem with the WinFax PRO printer drivers.
1) remove the existing WinFax PRO printer drivers by selecting the printer in Control Panel, Printers , right-click and clicking delete.
2) start WinFax Tools.
3) click on Install & Setup Tools
4) click on Install WinFax Printer option.