Recently, DOPUS has stopped opening Microsoft Word files. When I double-click on the file, it generates the message: "Not Implemented" and then another screen appears, offering to save the file as a .doc rather than a .docx file. However, the .doc file does not open properly either. If I exit DOPUS, everything works fine for a while and then the same thing begins to happen again. I believe this began happening after one of the Microsoft Windows updates.